PDF malware analysis — malicious · 0910fb9bdfec7ec0

MALICIOUS

PDF

7.5 KB Authoring application: Jgaxivakafowizasi (via ad684Uohosicilab)

MD5: 8a3a9130d7bb306cc43b5994ce1871a8 SHA-1: bec129b7fbee548780cbbd9362ce7fc6314c6985 SHA-256: 0910fb9bdfec7ec0b80198c0fe79d75f55c14c23c9c7241ea359443825676f73

106 Risk Score

Malware Insights

MITRE ATT&CK

T1059.007 JavaScript T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

This PDF file was flagged as malicious by multiple heuristics, including a critical ClamAV detection for obfuscated objects and an ML classifier. The embedded JavaScript is designed to download and execute a secondary payload, indicated by the script's functionality to construct and execute URLs. The obfuscated nature of the script and the PDF structure suggest an attempt to bypass security measures.

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` `c35f939b8b08b4458e4f2307d4bfd0afc23546c955e11c1da88e87302e40c9b0`	pdf-javascript-stream	PDF /JS object 11 at offset 0x1358	3029 bytes

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