PDF malware analysis — malicious · b8d1fd0b7abbb2d7

MALICIOUS

PDF

3.4 KB

MD5: 73dbd65995bfe973ef178abf9c618069 SHA-1: 41159c1717caec7fb26d74a78bd34769bd875c71 SHA-256: b8d1fd0b7abbb2d7ee3bc2404a132823f90c1ddf6c58e26787c10d80d082d4e8

216 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT and PDF_JS. The critical CVE_2009_4324 heuristic suggests exploitation of a specific vulnerability related to media player objects. The unescape() function call further points to obfuscated JavaScript, which is decoded and likely executed. The extracted JavaScript artifact, javascript_obj0006_000.js, is suspicious and contributes to the overall malicious nature of the document. The primary attack vector appears to be exploiting a known PDF vulnerability to run malicious code.

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)
Suspicious extracted artifact high 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.
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.

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0006_000.js` `4ffd13278d8f14141bf530e11e2e9c77e747d80d17f7a1f10fefa0419201469b`	pdf-javascript-stream	PDF /JS object 6 at offset 0x18D	2409 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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