PDF malware analysis — malicious · a7a17059320fb424

MALICIOUS

PDF

7.3 KB Created: 2010-09-16 18:52:20 Authoring application: Qabifagevafa (via f10acTiqotezozav)

MD5: b1a8b28e2929e5f4715c4b0687f5adcc SHA-1: 52ac63934e2dbd44c3974f5fc9b297d986468400 SHA-256: a7a17059320fb424ae9d8747e9f7a56dc4237df364d1720627598eb6c5e5e950

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. The presence of embedded JavaScript, identified as 'javascript_obj0011_000.js', strongly suggests an attempt to execute arbitrary code. The obfuscation noted by ClamAV indicates a deliberate effort to conceal the script's true purpose, likely to download and execute a secondary payload.

Machine Learning

Nyx PDF Classifier malicious score 0.9950

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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