PDF / .SWA malware analysis — malicious · ab91b102ea13a191

MALICIOUS

PDF / .SWA

7.2 KB Authoring application: Bofatezozinefaxfa (via 70621Vogewojixariuawi)

MD5: e35d9eaf7d7b6161799738fbc96c3847 SHA-1: 180eaf0b0e989f022358aa9f6ebb0f31dc1be962 SHA-256: ab91b102ea13a191830d21579b8e288e9e1ee2f0e4ad10f026da272539ea610f

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 a high ML score, indicating malicious intent. The presence of embedded JavaScript, detected as a PDF_JAVASCRIPT action and a PDF_JS stream, strongly suggests the execution of malicious code. This JavaScript is likely responsible for downloading and executing a secondary payload, a common technique for initial access and further compromise. The file's SHA256 hash is included as a primary IOC.

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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