Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2b57a4931c4e738…

MALICIOUS

PDF

3.2 KB
MD5: ad0c0e6819daf2068661e0401a94860c SHA-1: cb2ebd46e9690e7582ea7eae2b832d11e6d9e0b1 SHA-256: d2b57a4931c4e738382daf8f3730791f0594ec4cef7e63d48b297597c8b0e1b1
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-36121 confirms its malicious nature. The embedded JavaScript is likely responsible for exploiting a vulnerability within the PDF reader to download and execute a secondary payload, a common technique for initial access.

Heuristics 3

  • ClamAV: Pdf.Exploit.Agent-36121 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-36121
  • 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.

FilenameKindSourceSize
javascript_obj0007_000.js
d12ead9f16277f0def9d4fc2bcd0a633ed7f8c2ffbfb5787c3444aca0f1a7c81		 pdf-javascript-stream PDF /JS object 7 at offset 0x9CD 528 bytes

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