PDF malware analysis — malicious · 8e70cda6582a2d9f

MALICIOUS

PDF

3.1 KB

MD5: acb06c52fd6941537def32933928f3f8 SHA-1: 2cab494e7720dc2ed0b0685dd4025bce3ecc5cd5 SHA-256: 8e70cda6582a2d9f948f366e3ecba60ed2fd1caba383d4bc02d40acd30f48ee7

178 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT and PDF_JS. A critical heuristic identifies the exploitation of CVE-2009-4324 via a media.newPlayer call. The JavaScript stream is obfuscated, as noted by ClamAV's Heuristics.PDF.ObfuscatedNameObject detection and the Suspicious extracted artifact heuristic. The unescape() function is used, suggesting an attempt to deobfuscate malicious code. The primary attack vector appears to be the exploitation of this known vulnerability to achieve arbitrary code execution.

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` `268b83d76f94e9a3039a9501798c7ba24813b495c4415403f44310c0b6ba179a`	pdf-javascript-stream	PDF /JS object 6 at offset 0x195	2087 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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