PDF malware analysis — malicious · c84c4a23aa01a89a

MALICIOUS

PDF

7.3 KB Authoring application: Tooqimeqipigafara (via ffb3cRenizaxizo)

MD5: b4305f9e2b0df48286640ecff5c57227 SHA-1: 4d835a522f86fcf003e111b40489f7a213211d96 SHA-256: c84c4a23aa01a89ab80ce6753fda60d6324eb7a68377980ac877ae9c5c00aea3

106 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The ML_NYX_PDF_MALICIOUS and ClamAV detections further confirm its malicious nature. The embedded JavaScript stream, named javascript_obj0010_000.js, is the primary indicator of malicious activity, likely serving to download and execute a secondary payload.

Machine Learning

Nyx PDF Classifier malicious score 0.9991

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_obj0010_000.js` `b53e27bbdeba8c818850cc3826b3d643c06114ca0ccd161a827d53f8e26598c4`	pdf-javascript-stream	PDF /JS object 10 at offset 0x130D	2214 bytes

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