PDF malware analysis — malicious · 9df91978abf7db6d

MALICIOUS

PDF

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

MD5: b52498346ee9ff641aaa47fba38e22fe SHA-1: 8c00133cbe432e82dca8fbf92a784427ef9ae08c SHA-256: 9df91978abf7db6dc528f20db85e1d285a474b3eac6e28a13521c9f2ae21b23d

158 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF file contains embedded JavaScript triggered by an OpenAction, indicating an attempt to exploit vulnerabilities upon opening. Specifically, the CVE-2009-4324 heuristic firing suggests the use of the media.newPlayer exploit. The embedded JavaScript, though obfuscated, is likely designed to download and execute a secondary payload. The document body contains script-like content and metadata that does not provide a clear user-facing lure.

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` `5944ccdbe9255ab489ceda5163d9f0f89e9f70fa92f2bcefff44dd694ee5eba1`	pdf-javascript-stream	PDF /JS object 13 at offset 0x398	2568 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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