PDF malware analysis — malicious · f8f246e8fea97f4f

MALICIOUS

PDF

1.4 KB

MD5: 6bcda3dd683dd4bcbd38b1bd60577d97 SHA-1: 4312cca857db980c81168e5f97cb6a1c5ccfb3fb SHA-256: f8f246e8fea97f4ff59aba52a60a2bff916f104e482fb1ccf44d1357376e94ed

118 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The PDF file contains embedded JavaScript that is obfuscated and utilizes the unescape() function. A critical heuristic firing indicates the exploitation of CVE-2009-4324 via the media.newPlayer object, which is a known method for executing arbitrary code. The JavaScript is likely responsible for downloading and executing a second-stage payload.

Heuristics 5

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)
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` `bfed0fecb2b749c5050b67e4da135623b57ebd56065df063f970540cb93128a5`	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` `1a9f83cc8483fc1be265dee28d2b2821e70edbd3124a28fe469f0b5338f73858`	pdf-javascript-stream	PDF /JS object 111112 at offset 0x48A	253 bytes

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