PDF malware analysis — malicious · fa1846b4f6e1f877

MALICIOUS

PDF

55.7 KB

MD5: fd0419908fdcc8e29d24d924036667e4 SHA-1: dcf7d44599560b68f0dbb6c28fe3e9ca0e53fa59 SHA-256: fa1846b4f6e1f8775b41bf4cf3b42777860fd41d7889f9fdb4109e183c4c349f

178 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, which is obfuscated and utilizes a call to media.newPlayer, indicating exploitation of CVE-2009-4324. This technique is commonly used to download and execute further malicious payloads. The ClamAV heuristic also flags the file as suspicious due to obfuscated name objects.

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` `19959a8b0c07210ad3eb74f12b357bb0d610f38323d26a8e2f82c0d6b05fce5c`	pdf-javascript-stream	PDF /JS object 6 at offset 0xC0	2967 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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