PDF malware analysis — malicious · 955b81fbc9eb0a8d

MALICIOUS

PDF

7.5 KB Authoring application: Jgaxivakafowizasi (via 1ea05Uohosicilab)

MD5: 02ae2d7822ad6083fd0324d60780c969 SHA-1: b7386782c74bf27501c805d6294d0588acdc89db SHA-256: 955b81fbc9eb0a8d1313f6da01dc7d48e90f18625692b95231ad0b78c998ab90

106 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file was flagged as malicious by multiple heuristics, including a critical ClamAV detection for obfuscated objects and an ML classifier. Embedded JavaScript was detected, indicating the likely execution of arbitrary code. While the specific JavaScript content is obfuscated and truncated, its presence strongly suggests a malicious intent, such as downloading a second-stage payload.

Machine Learning

Nyx PDF Classifier malicious score 0.9954

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` `c35f939b8b08b4458e4f2307d4bfd0afc23546c955e11c1da88e87302e40c9b0`	pdf-javascript-stream	PDF /JS object 11 at offset 0x1358	3029 bytes

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