PDF malware analysis — malicious · f3637bae41fb1f45

MALICIOUS

PDF

2.1 KB

MD5: 1c5f67617408225a4be262ad549b466b SHA-1: f51d8b52d0d445ddb6e454399ec6e53daa182eae SHA-256: f3637bae41fb1f45bebbd07c677b91362d954d381e6ca79f84f1122e7771c040

118 Risk Score

Malware Insights

The PDF file contains embedded JavaScript that utilizes the unescape() function and exploits CVE-2009-4324 via the media.newPlayer object. This indicates an attempt to execute arbitrary code, likely to download and run a secondary malicious payload. The presence of obfuscated JavaScript further supports this conclusion.

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 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0005_000.js` `2001c22ccbd1a2c9a2087c07557128ba42051c8da57efa82645c8d42a5658fee`	pdf-javascript-stream	PDF /JS object 5 at offset 0x1BF	1443 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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