PDF malware analysis — malicious · 2c4feba559b72086

MALICIOUS

PDF

3.3 KB

MD5: eca83d2c58c3297f298141f79c741bdf SHA-1: 54b7641a46dab7db82117ef10e43dcba1ad336fc SHA-256: 2c4feba559b72086a76bd50987a7f7bb41e4c7dce168dc40ae877cb8aae28375

178 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT and PDF_JS. A critical vulnerability, CVE-2009-4324 (media.newPlayer), was detected, suggesting the JavaScript is intended to be executed upon opening the document. The presence of an obfuscated JavaScript stream (javascript_obj0006_000.js) and ClamAV's detection of 'Heuristics.PDF.ObfuscatedNameObject' further support that this file is malicious and likely attempts to download and execute 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` `741532131d73316ac7511ec83af330cb69f7eff9aa304ae8e7ad2b281fc40ae3`	pdf-javascript-stream	PDF /JS object 6 at offset 0x19B	2186 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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