PDF malware analysis — malicious · c63c3a8f108a65b4

MALICIOUS

PDF

2.7 KB

MD5: 44e18b9f556640ee563c5ceff8bc4403 SHA-1: 5ed6877fa4806a6dbeaa32271cc45a9571e10bc5 SHA-256: c63c3a8f108a65b4a93fcfa2b982f0759763e07a83cd0e1f15b1c2f1daee32a7

178 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: Malicious File

The PDF file contains embedded JavaScript that utilizes the unescape function and exploits CVE-2009-4324 via the media.newPlayer object. This combination strongly suggests an attempt to download and execute a secondary payload. The ClamAV detection and the presence of obfuscated JavaScript further support a malicious classification. No specific family could be identified.

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` `c508997b651dfd72edbea001973c4665390d682fdd852f59220d8577250466bd`	pdf-javascript-stream	PDF /JS object 6 at offset 0x1A1	1726 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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