PDF malware analysis — malicious · 6138dadf2f911bbe

MALICIOUS

PDF

7.1 KB Authoring application: Wezolokofecpo (via 180faNworeticakebi)

MD5: bd3f8cfd801404d35f35e1475ea6ddfa SHA-1: e24fd86a386950549170a7255d1cc0ede76c0999 SHA-256: 6138dadf2f911bbee26fb3f1f0491f7a18cbb9dbbbc94c190bef7de2581c93ad

106 Risk Score

Malware Insights

MITRE ATT&CK

T1059.007 JavaScript T1566.001 Spearphishing Attachment

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection for obfuscated objects and an ML classifier indicating maliciousness. Embedded JavaScript was detected, which is commonly used to download and execute secondary payloads. The authoring application also suggests a potentially obfuscated or custom tool was used.

Machine Learning

Nyx PDF Classifier malicious score 0.9953

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` `437a5d40b54247c17dfb3ac60e39d3ecfad672a269694af1851a077d9726a8d2`	pdf-javascript-stream	PDF /JS object 11 at offset 0x1342	2272 bytes

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