PDF malware analysis — malicious · 06638a91d37e835d

MALICIOUS

PDF

7.5 KB Authoring application: Jgaxivakafowizasi (via 3bd1eUohosicilab)

MD5: f5e7b856e3282b90a87e6f52b3f195b1 SHA-1: fe3bf10a283620c33d015ce28b185fe0c308afea SHA-256: 06638a91d37e835da3c7b632657a41beff41299a3521320e86778db1005904cb

106 Risk Score

Malware Insights

MITRE ATT&CK

T1059.007 JavaScript T1566.001 Spearphishing Attachment

The PDF file contains obfuscated JavaScript that, when deobfuscated, attempts to download and execute a file from a hardcoded URL. The ML classifier and ClamAV heuristics strongly indicate malicious intent, likely for delivering 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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