PDF malware analysis — malicious · f9058d0cf9c08f5e

MALICIOUS

PDF

4.1 KB Created: 2008-31-20 53:85:00 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12)

MD5: aa6b42f3bca97b5ea4b2d2875f3c6613 SHA-1: 060d2acdef6889b1b2e7fdf2bd640dd1b8e02596 SHA-256: f9058d0cf9c08f5e757364574c5f393e79109c3675972991e6410d5800be8937

158 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File Execution: Malicious File

The PDF file contains embedded JavaScript triggered by an OpenAction, which is a common technique for exploiting vulnerabilities. Specifically, the critical heuristic firing for CVE-2009-4324 (media.newPlayer) indicates the exploitation of this known vulnerability. The embedded JavaScript stream, javascript_obj0013_001.js, is likely responsible for executing the exploit payload.

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.
OpenAction trigger high PDF_OPENACTION

PDF has an /OpenAction — code runs automatically when opened
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits
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_obj0001_000.js` `17944869454301b43f531ccdc5646dc63d9c0f2f1092846b3d5363d7cfe438bf`	pdf-javascript-stream	PDF /JS object 1 at offset 0x16	33 bytes
`javascript_obj0013_001.js` `1dcf1a945b1caa987ccbf91ec9c6b83f1b8e1c42cbf45d66e16f65890ccf31ad`	pdf-javascript-stream	PDF /JS object 13 at offset 0x3A5	2639 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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