PDF malware analysis — malicious · 433087ba1de1338a

MALICIOUS

PDF

9.7 KB Created: 2009-12-17 16:59:10 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12)

MD5: 9af36573ec39d6b10ae9f0ebe6664207 SHA-1: a7aff5199542be22a24ec421f9fbd4bbc2f1ecb2 SHA-256: 433087ba1de1338ab8f0de329a82b6f29b87e7f6d2728defea159f28e430d059

118 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including 'PDF_JAVASCRIPT' and 'PDF_JS'. A critical heuristic identified the 'CVE_2009_4324' vulnerability related to media.newPlayer, suggesting the JavaScript is designed to exploit this flaw. The presence of an unescaped string and a suspicious extracted JavaScript file further supports this. The script likely downloads and executes a second-stage payload.

Heuristics 5

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. (matched in decompressed stream)
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (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 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0021_000.js` `299d67296f94004a3dbf0a8c2c9abd28bc8980494452e8b17e78acec78f14fc1`	pdf-javascript-stream	PDF /JS object 21 at offset 0x1883	12017 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 243 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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