PDF malware analysis — malicious · c7fe55982f9d1b3a

MALICIOUS

PDF

7.5 KB Created: 2010-09-29 21:19:03 Authoring application: Ozifotozataqedowige (via 86a1dNtpavotiyse)

MD5: 2156daf92bde32a4ac15e5c12da30e0c SHA-1: 710fd96b5e70dd0105db50de64c77aa038243e95 SHA-256: c7fe55982f9d1b3a29536f5e5e32a1ee2cce2ad8c38f08095174c304e8f4cb8c

108 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection for obfuscated objects and an ML classifier indicating maliciousness. The presence of embedded JavaScript, indicated by PDF_JAVASCRIPT and PDF_JS firings, suggests an attempt to exploit vulnerabilities within the PDF reader. The JavaScript likely aims to download and execute a secondary payload, although the exact mechanism is obscured.

Machine Learning

Nyx PDF Classifier malicious score 0.9989

Heuristics 3

ClamAV: Heuristics.PDF.ObfuscatedNameObject critical CLAMAV_DETECTION

ClamAV detected this file as malware: Heuristics.PDF.ObfuscatedNameObject
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.

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0010_000.js` `08724a64e7194995851d78b6a68c028cb93037929c34f4c5eaf880902140b335`	pdf-javascript-stream	PDF /JS object 10 at offset 0x12FD	2950 bytes

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