PDF malware analysis — malicious · 960fbdacb9e878d6

MALICIOUS

PDF

1.4 KB

MD5: f59bea252dd2f9228492126ee327d7a8 SHA-1: 69e4a9f081fd59c41f1cf6677dc8809c7c1641c1 SHA-256: 960fbdacb9e878d627aea3e25474e1fbc30034caa6e38ba7ccae80aad862ef68

118 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: Malicious File

The PDF file contains embedded JavaScript that is obfuscated and utilizes the unescape() function. The critical heuristic firing indicates exploitation of CVE-2009-4324 via the media.newPlayer object, which is a known method for executing arbitrary code. The JavaScript is likely intended to download and execute 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` `b967e472a8302145d3f770b1495837c46e1df9c5b561eb44ef311c993138d13d`	pdf-javascript-stream	PDF /JS object 111111 at offset 0x160	1267 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` `f2b3b83c8e04258cc947fb6646afa2b8922022bd3a015ca68a1ff1052bd81348`	pdf-javascript-stream	PDF /JS object 111112 at offset 0x48A	255 bytes

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