PDF malware analysis — malicious · 36142ba6738a35bf

MALICIOUS

PDF

1.4 KB

MD5: cbd915d660771315f1bf9a11bf680d2d SHA-1: f3cd656977f2b5539bd1dd5e2d55d47f09754fc6 SHA-256: 36142ba6738a35bf5abe175afa3b0882b7db3f756f26795210e5a42f1a7952f8

118 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious Link T1059.007 JavaScript

This PDF file contains embedded JavaScript, which is triggered by the CVE-2009-4324 vulnerability related to media player handling. The JavaScript is obfuscated, but the presence of the unescape function and the specific CVE firing indicate an attempt to execute malicious code. The primary attack vector appears to be exploiting this known PDF vulnerability to achieve arbitrary code execution.

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` `5107fca736ba5544838cb16ebbb8e509b2661631c6f297dd051b742d6135ff81`	pdf-javascript-stream	PDF /JS object 111111 at offset 0x160	1275 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` `6c3b3ba82efd581e12f3d126bb21bfd5e498138dfb8709bd3e2072023c4590ff`	pdf-javascript-stream	PDF /JS object 111112 at offset 0x480	264 bytes

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