PDF malware analysis — malicious · 81af2d98876d0c4f

MALICIOUS

PDF

1.4 KB

MD5: fc77b5b82914f4475fd671e747163de7 SHA-1: a849a1b21c6242c722e2974f40b0e47d814c9e24 SHA-256: 81af2d98876d0c4f4d4c3de1250326b3e07b2f7a22c216804ea6edf82508c51a

118 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: Malicious File

The PDF file contains embedded JavaScript that is triggered by the CVE-2009-4324 vulnerability related to media.newPlayer. The JavaScript is obfuscated and likely intended to download and execute a second-stage payload. The presence of multiple JavaScript streams and the specific exploit indicate a malicious PDF designed for exploitation.

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` `3726c8921a2e79edaf3cf9119706a9c8ea3b8215bf75f6e1f62b0f4ff5d1b011`	pdf-javascript-stream	PDF /JS object 111111 at offset 0x160	1242 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` `d50202fa979c66583e778162ba93e03b0e22a018eaa9836b410a72b4700849c6`	pdf-javascript-stream	PDF /JS object 111112 at offset 0x481	254 bytes

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