PDF malware analysis — malicious · 92495ab95c1016fe

MALICIOUS

PDF

3.1 KB

MD5: fba21d86d0d6df598a52c6c3bfb164a8 SHA-1: 56d4a80ed45f2d06bc8ef46a4010b647b068494e SHA-256: 92495ab95c1016fed591438aea398bc14f52f475c54385c678dcc838a56e7ca8

178 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript T1204.002 Malicious JavaScript

The PDF file contains embedded JavaScript and triggers a critical heuristic for CVE-2009-4324, indicating exploitation of a known vulnerability. The presence of obfuscated JavaScript, detected by ClamAV as Heuristics.PDF.ObfuscatedNameObject, suggests an attempt to hide malicious code. The JavaScript action and embedded JS stream further confirm the malicious intent. The primary attack vector appears to be leveraging the media.newPlayer vulnerability.

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. (matched in decompressed stream)
ClamAV: Heuristics.PDF.ObfuscatedNameObject critical CLAMAV_DETECTION

ClamAV detected this file as malware: Heuristics.PDF.ObfuscatedNameObject
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_obj0006_000.js` `bf7fdc8abf7258f0315c5bca3a15cb552734f7ceac236be225965f30c67e0495`	pdf-javascript-stream	PDF /JS object 6 at offset 0x1B1	2089 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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