PDF malware analysis — malicious · 4a9c3c021f41da51

MALICIOUS

PDF

7.5 KB Authoring application: Jgaxivakafowizasi (via eff1dUohosicilab)

MD5: 742ea049067f9d93cd655988abba0ada SHA-1: b94a2c5191eff1f89a81a997e26218251a56f8f9 SHA-256: 4a9c3c021f41da5174ce4e95086df4d027eacaf53df58d69caa241137bae48d6

76 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. ClamAV also flagged it with Heuristics.PDF.ObfuscatedNameObject, suggesting obfuscation techniques are in use. The embedded JavaScript is likely responsible for executing malicious actions, such as downloading and executing a second-stage payload, which is a common attack pattern for malicious PDFs.

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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