PDF malware analysis — malicious · be099cc60586c161

MALICIOUS

PDF

7.5 KB Authoring application: Jgaxivakafowizasi (via 8eafcUohosicilab)

MD5: 350c53106d840e4dcd5a3e5173461953 SHA-1: b913f0480fb26cc7c6bda6107338445182b1f52d SHA-256: be099cc60586c1617c7195533bf55156a5d98b61a85604d6727ca8eb09a0dba6

106 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The file is a PDF containing obfuscated JavaScript, as indicated by multiple heuristic firings including ML classification and ClamAV detection. The embedded JavaScript is the primary mechanism for exploitation. While the exact behavior of the script is obscured, its presence within a malicious PDF strongly suggests it's designed to download and execute a secondary payload or exploit a vulnerability within the PDF reader.

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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