PDF malware analysis — malicious · 9a8050cdd078572f

MALICIOUS

PDF

7.3 KB Created: 2010-09-16 18:52:20 Authoring application: Qabifagevafa (via 5d5ddTiqotezozav)

MD5: ae26a64cfd4e9552f1e19c7a8bdcf8e3 SHA-1: 2b4ecc05b4cbaeac94fa60b5b041257d85006ed1 SHA-256: 9a8050cdd078572f1c2c40342815aa69ca067930f2e16ba19531f1d699f0f760

106 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1566.002 Spearphishing Attachment

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection for obfuscated objects and an ML classifier indicating maliciousness. The presence of embedded JavaScript, indicated by 'PDF_JAVASCRIPT' and 'PDF_JS' heuristics, suggests an attempt to execute arbitrary code. While the JavaScript content itself is not directly provided, its presence within a malicious PDF strongly implies it's used for delivering a secondary payload or exploiting vulnerabilities. The 'ML_NYX_PDF_MALICIOUS' heuristic further supports the malicious nature of the document.

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` `ff85b44f7d06834e69a161aee8e28b7340c56fef50ee1649100cb6f376ea5386`	pdf-javascript-stream	PDF /JS object 11 at offset 0x1364	2324 bytes

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