PDF malware analysis — malicious · cbc8179929f3ceeb

MALICIOUS

PDF

1.4 KB

MD5: 2f04a6b40c12893db10e39d4d6133cb6 SHA-1: 6abf818bdb3f70157759c178172f34e06b820aac SHA-256: cbc8179929f3ceeb9550c4e2eec50437db5b7a5b34deb915fdcdcbbc1d29bc40

180 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious Link T1059.001 PowerShell

The PDF file contains embedded JavaScript, which is triggered by the CVE-2009-4324 vulnerability via the media.newPlayer object. The embedded JavaScript is likely responsible for downloading and executing a second-stage payload. The ClamAV detection 'Pdf.Exploit.Agent-21973' further confirms the malicious nature of the file.

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: Pdf.Exploit.Agent-21973 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-21973
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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj111111_000.js` `f9a37a304da934adc4d0ea05a299c9524b0750681ce2e2a5a8f0189f09585e25`	pdf-javascript-stream	PDF /JS object 111111 at offset 0x160	1258 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).
`javascript_obj111112_001.js` `d8c06a4bb03f9ece647f376dbaafae7736b5e89ec4649c669c566eff797e3391`	pdf-javascript-stream	PDF /JS object 111112 at offset 0x489	243 bytes

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