PDF malware analysis — malicious · a0446d3310bd5869

MALICIOUS

PDF

7.5 KB Authoring application: Jgaxivakafowizasi (via 65f91Uohosicilab)

MD5: 16adc26ebd5dbb0b58ad615480f14095 SHA-1: e8b7ca2fddb0d2ca26fa8b27f8f5a0688d915701 SHA-256: a0446d3310bd5869f9b984b5b4ffc2ecaafd1e48ed1f50bd5a3c9d8967ab995f

106 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file was flagged as malicious by multiple heuristics, including a high-severity ML classifier and ClamAV detection for obfuscated objects. The presence of embedded JavaScript, indicated by PDF_JAVASCRIPT and PDF_JS heuristics, suggests the file is designed to execute malicious code upon opening. The JavaScript stream itself was too obfuscated to determine its exact function, but its presence is a strong indicator of malicious intent.

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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