PDF malware analysis — malicious · d1dc2465f0afc3b6

MALICIOUS

PDF

45.0 KB

MD5: 545b7bc86350898564bf2d812687d882 SHA-1: 8b195c9ef58ef6815b6aecff6bd2fc8b54bf1fe9 SHA-256: d1dc2465f0afc3b6b59698013eec24d7a3a5f7dc6a0f46ae25203c1d8f9cc315

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 detection as Pdf.Exploit.Agent-36128 strongly suggests it's a malicious PDF exploiting a known vulnerability. The large embedded JavaScript streams (45KB and 33KB) are likely responsible for downloading and executing a secondary payload, a common technique for initial access.

Heuristics 3

ClamAV: Pdf.Exploit.Agent-36128 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36128
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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0008_000.js` `570ee73dfa9ab991840bbd96eb99071d55c75d4c5c9f8532d5912ebb31fbe65c`	pdf-javascript-stream	PDF /JS object 8 at offset 0x1E7	45305 bytes
`legacy_pdfkit_stage_000.js` `d9e566e81837fef0aa3c8eb6b162cc033d5fd3d1239afe88c368b78c81b75195`	deobfuscated-js	double percent-decoded annotation JavaScript at offset 0x1E7	33047 bytes

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