PDF malware analysis — malicious · 7a9a189ddbb9a805

MALICIOUS

PDF

7.4 KB Created: 2010-09-16 18:55:19 Authoring application: Tolhipezorojpagiwaqo (via 12c30Seueganadazaqeav)

MD5: 9c3bcbd73939af9db503a54d6533e7c6 SHA-1: 5695e5bc69f35465294b68724d6f646fd6081df0 SHA-256: 7a9a189ddbb9a805a601c6ff2a9ccab59ef8e0d95b0d5e57c5ade79d8ead14fd

106 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1566.001 Spearphishing Attachment T1027 Obfuscated Files or Information

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection for obfuscated objects and an ML classifier indicating maliciousness. Embedded JavaScript streams were identified, suggesting the document's primary function is to execute arbitrary code. The obfuscated nature of the JavaScript, as indicated by the 'ObfuscatedNameObject' rule and the ML score, points towards an attempt to evade detection. The specific JavaScript stream 'javascript_obj0011_000.js' is the primary artifact for further analysis.

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` `e2d41866c9fb013feb60cefe8b41892c7277decb0774febb940ce493b1221654`	pdf-javascript-stream	PDF /JS object 11 at offset 0x1387	2332 bytes

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