PDF malware analysis — malicious · f18854e1b622fb83

MALICIOUS

PDF

2.3 KB

MD5: 9e75464b808f04752c5e3e6fa3d40e71 SHA-1: 94f32ae0694fa14051f8baa02f709aeffb8769b1 SHA-256: f18854e1b622fb83069ba880a2b80c206893b96400233a6cb226dd21effe4a42

118 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution T1059.007 Command and Scripting Interpreter: JavaScript

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT and PDF_JS. The critical CVE_2009_4324 heuristic firing suggests exploitation of the media.newPlayer vulnerability. The JavaScript likely attempts to download and execute a second-stage payload, although the specific details are obfuscated. The presence of unescape() further supports obfuscation techniques.

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.
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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0005_000.js` `e74fb0eea602a745c6dd22121d0251de22c453489af9054e570393b15012db02`	pdf-javascript-stream	PDF /JS object 5 at offset 0x117	1837 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s).
`javascript_obj0005_001.js` `992e113c60b418ebe9eb9983a2e985759d714a58c1ad5f7297f104859c239b00`	pdf-javascript-stream	PDF /JS object 5 at offset 0x117	36 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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