PDF / .SWA malware analysis — malicious · da98c934dbfb9ae5

MALICIOUS

PDF / .SWA

7.2 KB Authoring application: Bofatezozinefaxfa (via c5673Vogewojixariuawi)

MD5: e5120ce2eaacdc208f874f8f5cb461e9 SHA-1: 639f2573bb9eb16eda96b4dd087c7b104c38af05 SHA-256: da98c934dbfb9ae5d7080929d08478b262029f4eceb28d065e5b0719b300de5b

106 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1566.002 Spearphishing Attachment

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings and the presence of a javascript_obj0011_000.js artifact. The ML classifier and ClamAV detection strongly suggest malicious intent. The JavaScript is likely used to exploit a vulnerability within the PDF reader to execute arbitrary code, a common technique for delivering further malware. The obfuscated nature of the document body and the specific ClamAV detection (Heuristics.PDF.ObfuscatedNameObject) further support this assessment.

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` `ca838ab153ea9de4fff1e74bdd0848fd720f71bc6fbee4425be234136cd19b41`	pdf-javascript-stream	PDF /JS object 11 at offset 0x1349	2325 bytes

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