PDF malware analysis — malicious · 525ea379ec474c31

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: a72e605de1862f7239bda0d5310adcae SHA-1: 28f0c9b8995085cc80900f7e16769f7dea56e289 SHA-256: 525ea379ec474c3105175d68f6c7d97a3b2fd1255c3fa0e8414316fc9debafcd

158 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF document contains embedded JavaScript triggered by an OpenAction, exploiting CVE-2009-4324 via the media.newPlayer method. The JavaScript is obfuscated and likely intended to download and execute a second-stage payload. The heuristics indicate a malicious PDF with JavaScript actions and an unescape call, consistent with exploit delivery.

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` `fb161e0ba6ea0f99319b029a28bc058bc1594af77424b59fc5b680e319491111`	pdf-javascript-stream	PDF /JS object 13 at offset 0x393	2591 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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