PDF malware analysis — malicious · 233c424f5c10f855

MALICIOUS

PDF

1.4 KB

MD5: ad01ff2e92868bfd85afa637266310fc SHA-1: 5813cec3ad98b8779a32865ff1eddc0efa4c8149 SHA-256: 233c424f5c10f855e4d29ef7b5ba5d2ca6573c60eda9af88bcb75c274a0ee7b6

178 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution: Malicious File T1071.001 Web Protocols: Web Protocols

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT and PDF_JS. A critical heuristic identified the CVE-2009-4324 vulnerability related to media.newPlayer, suggesting the JavaScript is used to exploit this flaw. The presence of 'unescape()' further points to obfuscated JavaScript intended to download and execute a secondary payload. ClamAV also detected this file as Pdf.Exploit.Agent-21171.

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-21171 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-21171
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` `34deeb47e96abcb88896da72b304c7ceeee439ac6b52fd9b4c73237768fb4c7c`	pdf-javascript-stream	PDF /JS object 111111 at offset 0x160	1277 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` `d86a9d13c131d42344ca8351984bc9473c54229563611060659141d08c3b69f4`	pdf-javascript-stream	PDF /JS object 111112 at offset 0x48E	272 bytes

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