PDF malware analysis — malicious · 2e67c6bd1702a516

MALICIOUS

PDF

3.6 KB

MD5: 51f66ed58b43c4aa8f101ef6f5d05a6d SHA-1: f57e0c97a6f51442b6a55a7051a3ed7e785d9ac4 SHA-256: 2e67c6bd1702a51687c12e9e7e244b4bd8579622ecf09cc87101b6bd17e7b87f

178 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The unescape() function and the specific CVE-2009-4324 (media.newPlayer) exploit firing suggest that the JavaScript is used to trigger a known vulnerability in PDF readers. The ClamAV detection further confirms the malicious nature. The embedded JavaScript is likely responsible for downloading and executing a second-stage 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. (matched in decompressed stream)
ClamAV: Heuristics.PDF.ObfuscatedNameObject critical CLAMAV_DETECTION

ClamAV detected this file as malware: Heuristics.PDF.ObfuscatedNameObject
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_obj0006_000.js` `2009ce1583a343239c5370895ea33994066ed8191f7a044a532b470ca335a585`	pdf-javascript-stream	PDF /JS object 6 at offset 0x1A5	2478 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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