PDF malware analysis — malicious · 9a3b4c00fd4995d4

MALICIOUS

PDF

3.2 KB Created: 2010-02-11 10:58:54 Authoring application: zt6916f

MD5: 60a1e776247b04aed1ba9811510442db SHA-1: 6811cfaabc87a5601f2e81c9704acf31135b00d2 SHA-256: 9a3b4c00fd4995d43bc363ef0cd09b76b69730db9f62bf01ffba8aa372db6422

198 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link T1204.002 Malicious File

The PDF file contains embedded JavaScript that exploits multiple known vulnerabilities (CVE-2009-4324, CVE-2009-0927, CVE-2007-5659) related to the media.newPlayer, Collab.getIcon, and Collab.collectEmailInfo functions. The JavaScript is obfuscated and appears to be designed to download and execute a secondary payload. The presence of these specific CVE exploits strongly suggests a malicious intent to compromise the user's system.

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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0028_000.js` `6f34646ab6501354a9ed6ff830c65359c73a9720c2afffd0bd430aec9411c3e8`	pdf-javascript-stream	PDF /JS object 28 at offset 0x217	932 bytes
`legacy_pdfkit_stage_000.js` `cb6b96d1342e3c8e15cbf8a95b07d87c6e45434b52079e8c90722dec2d072000`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x44B	2627 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s).

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