PDF / .IN_ malware analysis — malicious · 39787279e31a22ef

MALICIOUS

PDF / .IN_

3.7 KB

MD5: 640a67632dea3ec5bf9bebbf1c3e1046 SHA-1: 3fae488b62d8d1035fc3a1da6f5350955a30dc32 SHA-256: 39787279e31a22ef7bd8e87a016d5f79b0301415f30c5037831902f820e127a0

158 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript that utilizes the `unescape()` and `eval()` functions, indicating obfuscated code execution. A critical heuristic firing for CVE-2009-4324 (media.newPlayer) suggests exploitation of a known Adobe Reader vulnerability. The embedded JavaScript is likely responsible for downloading and executing a secondary payload, as suggested by the heuristic firings and the nature of the exploit.

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.
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits
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 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0008_000.js` `d90f07600ef9fd989854b53b00939f46e4b22c01ecb36cb6a87927f4756e9e99`	pdf-javascript-stream	PDF /JS object 8 at offset 0x217	533 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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