PDF malware analysis — malicious · 2f417681aea67f9d

MALICIOUS

PDF

1.4 KB

MD5: efbb38d4d68dc1ae609610e02c62eb22 SHA-1: 2919d4b07be4d531fd799c5a6e33a8e661553577 SHA-256: 2f417681aea67f9d5676d0fa422402bbf62f7953cb86306c7e7623a5489e0598

118 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF file contains embedded JavaScript, which is obfuscated and uses the unescape() function. A critical heuristic identified the CVE-2009-4324 vulnerability related to media.newPlayer, indicating an exploit attempt. The embedded JavaScript likely attempts to download and execute a second-stage payload, leveraging the identified vulnerability.

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` `08bafca67351f7572220f490c6255288c69701de1792681f4bb9e858fa11b6f0`	pdf-javascript-stream	PDF /JS object 111111 at offset 0x160	1276 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` `349df58849f1c4d00b4296a647c66073da01544d55170c992e8a4779b7b4a6fd`	pdf-javascript-stream	PDF /JS object 111112 at offset 0x48F	266 bytes

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