Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b77cfb82fa23af1…

MALICIOUS

PDF

3.2 KB
MD5: 8d02c95c371c62d29f68b53e7c32adea SHA-1: eb3ec28874d0fb231908bab20b001f46290ca4ed SHA-256: 4b77cfb82fa23af128cd81ac4616ade916e59c8cd03a81d7b7d5c6f850a03bde
76 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: Malicious JavaScript

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 PDF vulnerability to achieve arbitrary code execution, a common technique for delivering further malicious payloads.

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
2b72848214a8a5f1d4fae20f989db9e79454c71d31813d0c708d210ff0efd101		 pdf-javascript-stream PDF /JS object 7 at offset 0x9C9 516 bytes

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