PDF malware analysis — malicious · 87375627973525c0

MALICIOUS

PDF

4.3 KB Created: 2008-09-24 19:47:56 Authoring application: Adobe

MD5: 2bea8edad003a24f26131edbe0a7daf1 SHA-1: 1e27d2220e6efeb75e04885128ecc74bb8621484 SHA-256: 87375627973525c0c1fdde16370ada0314637d7e5ce528e88c90d5fc40ee0250

240 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

This PDF file contains multiple critical heuristic firings indicating exploitation of CVE-2009-4324, CVE-2009-0927, and CVE-2007-5659. These vulnerabilities are leveraged through embedded JavaScript, which is obfuscated and uses eval() calls. The script's likely intent is to download and execute a secondary payload, a common technique for initial access. The specific vulnerabilities targeted suggest an older exploit kit or a custom exploit chain.

Heuristics 7

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)
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution (matched inside decoded stream)
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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0006_000.js` `5cd7969c588994be58499eb2b8420151a1aff7a0bdac0e2c52594a3b8b0a9c80`	pdf-javascript-stream	PDF /JS object 6 at offset 0xC3E	90 bytes
`javascript_obj0016_001.js` `a2b7aae6da0c46aa0a12bff1a52144e28776aa3b5ddeda10b6a649ee475502cd`	pdf-javascript-stream	PDF /JS object 16 at offset 0xCDB	411 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
`javascript_obj0026_002.js` `8c247382e382b1e380528f7bf7b1df46d9f0843e432e32b4f113db6c94ae5796`	pdf-javascript-stream	PDF /JS object 26 at offset 0xE36	127 bytes
`legacy_pdfkit_stage_000.js` `9eb7aefba91f09524c2ad385fe4834ea0fec3ccd69f08a1862f5660a69d3606c`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x1BB	6477 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 12 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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