PDF malware analysis — malicious · bb9ddfbfe746fb03

MALICIOUS

PDF

1.4 KB

MD5: 21b886b71b9d7c0bcb25a440bf450940 SHA-1: a0ab82fbe27de1b3c955b150bf84972828423736 SHA-256: bb9ddfbfe746fb0325b7db379898f630c3307da63431371db8944788d0f6d93f

180 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The critical CVE_2009_4324 heuristic firing points to the exploitation of a known vulnerability in Adobe Reader, specifically related to media player functionality. The presence of unescape() calls and the ClamAV detection as Pdf.Dropper.Agent-7217107-0 further confirm its malicious nature. The embedded JavaScript is likely responsible for downloading and executing a secondary payload, a common dropper behavior.

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.Dropper.Agent-7217107-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7217107-0
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` `e27a8f0e71e29eb60b61072903b41b68176fc3eb1e8c6878500e626e042afc02`	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` `6c9c31ac91b8e9d03a9063b2a7161897a8ec6e6e44e2bfdf224354f9a855f53b`	pdf-javascript-stream	PDF /JS object 111112 at offset 0x484	255 bytes

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