PDF malware analysis — malicious · fe28b6ca475f50c3

MALICIOUS

PDF

6.1 KB Created: 2009-01-35 62:12:26 Authoring application: Adobe

MD5: 26d41af8b907ab48e2326885b4cdd46d SHA-1: 7931674a7c0d788f5b9199effe0fd26dae77a7d5 SHA-256: fe28b6ca475f50c36b90baaf1e18074a9ce84bd22db94d54b96f30fe1456ad18

198 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/Shell Script Execution T1204.002 Malicious Link/URL

The PDF file contains multiple critical heuristic firings indicating exploitation of CVE-2009-4324, CVE-2009-0927, and CVE-2007-5659. These vulnerabilities are leveraged to execute embedded JavaScript. The extracted JavaScript files, particularly legacy_pdfkit_stage_000.js, legacy_pdfkit_stage_001.js, and legacy_pdfkit_stage_002.js, are indicative of a multi-stage attack designed to download and execute further malicious content. The presence of these known exploit indicators strongly suggests a malicious intent.

Heuristics 6

media.newPlayer — CVE-2009-4324 critical CVE exact CVE_2009_4324

PDF JavaScript calls media.newPlayer — CVE-2009-4324 is a use-after-free in Adobe Reader's multimedia plugin triggered by media.newPlayer(). Actively exploited as a zero-day in December 2009. (identified after JavaScript deobfuscation)
Collab.getIcon — CVE-2009-0927 critical CVE exact CVE_2009_0927

PDF JavaScript calls Collab.getIcon — CVE-2009-0927 is a stack buffer overflow in Adobe Reader triggered by Collab.getIcon() with a crafted argument. Allows arbitrary code execution. (identified after JavaScript deobfuscation)
Collab.collectEmailInfo — CVE-2007-5659 critical CVE exact CVE_2007_5659

PDF JavaScript calls Collab.collectEmailInfo — CVE-2007-5659 is a buffer overflow in Adobe Reader triggered by a long argument or heap-sprayed message field passed to Collab.collectEmailInfo(). Part of a series of Acrobat JS API exploits. (identified after JavaScript deobfuscation)
JavaScript action low PDF_JAVASCRIPT

PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
Embedded JS stream low PDF_JS

PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE

One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.

Extracted artifacts 6

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0032_000.js` `48e6642704931eb586c76df48a43c9f387e1209aef1b804d9f6ba2a5066a7c90`	pdf-javascript-stream	PDF /JS object 32 at offset 0x352	273 bytes
`javascript_obj0034_001.js` `5440d012d9151bb5a82ba18b7fcff0a03e977089631530c59a5bd048646d9ec5`	pdf-javascript-stream	PDF /JS object 34 at offset 0x44C	365 bytes
`javascript_obj0036_002.js` `ba875eb71c39354ef18c2a69d67550667d8aa4c84ccf7620976aed8b4e3c125f`	pdf-javascript-stream	PDF /JS object 36 at offset 0xBC	248 bytes
`legacy_pdfkit_stage_000.js` `58e428137e7034683c38adcd5e62481706aed675b452db0650e5f8c4ed51d641`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x592	1640 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).
`legacy_pdfkit_stage_001.js` `5f585e3d073227f2aaefc706e339dcc1347cd47b1f64f7493c91277251c10f33`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0xB2B	1806 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).
`legacy_pdfkit_stage_002.js` `771c5d2a9ff95552bf92388bf715f9acd0f4f8fb6dbae06452a8e11d3cff7bbe`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x10A7	2950 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 6 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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