PDF malware analysis — malicious · bb20bf4078af2b6b

MALICIOUS

PDF

6.7 KB Created: 2010-09-03 08:30:37 Authoring application: Xijokanilohova (via d1d04Kmgxaloxaxgi)

MD5: e001e25cf19554e0efcebef5dc923486 SHA-1: 111387392a8370a4c3ecc83630bcfa277b4ad6cd SHA-256: bb20bf4078af2b6ba4131607a2cb6789a36c14d432b19a1ac3d29b0506cc08a0

106 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1566.002 Spearphishing Attachment T1204.002 Malicious File

The PDF file contains embedded JavaScript, as indicated by multiple heuristic firings including PDF_JAVASCRIPT and PDF_JS. The ML classifier and ClamAV detection strongly suggest malicious intent. The embedded JavaScript is likely responsible for exploiting a vulnerability or downloading a secondary payload, which is a common attack vector for malicious PDFs. No specific family could be identified.

Machine Learning

Nyx PDF Classifier malicious score 0.9925

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_obj0011_000.js` `d75aba2bc241d027161697fa7aada0bf45c7afe5b58fce1bb0bf66350349f123`	pdf-javascript-stream	PDF /JS object 11 at offset 0x1208	1983 bytes

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