PDF malware analysis — malicious · c58badd8188b1bac

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: 0c96aa3d8424fc1ea7ce6da983caf6ed SHA-1: e92009e08c5fb7c62a442976d03404e808789d76 SHA-256: c58badd8188b1bac99c7ef32084964f776ab9db3f97bc527f933ca92546bcba4

158 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File T1566.001 Spearphishing Attachment T1204 User Execution

This PDF document contains embedded JavaScript, triggered by an OpenAction, which exploits CVE-2009-4324 using the media.newPlayer method. The JavaScript is obfuscated and appears to be designed to download and execute a second-stage payload. The document's metadata indicates it was created with Scribus, but the exploit is the primary indicator of 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.
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 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0013_001.js` `6e7a9e4b1817dea242af32a19264d3b905f3426cfeb58679f70c64c2f243d2bf`	pdf-javascript-stream	PDF /JS object 13 at offset 0x39A	2630 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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