Malicious PDF — malware analysis report

Static analysis result for SHA-256 8771e0afb4e161f8…

MALICIOUS

PDF

3.2 KB
MD5: b420e6b2ebe953c118b2b17aa5f50d09 SHA-1: b186174bd99bdfcad22615fc24795ab8a29fa129 SHA-256: 8771e0afb4e161f8e6954ebb1b73ce592f4e09a1956046207f195a4e3202b940
76 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 JavaScript/JScript 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 further confirms its malicious nature. The embedded JavaScript is likely responsible for exploiting a PDF viewer vulnerability to achieve its malicious objective, such as downloading a secondary payload.

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
b043714db241f6e20a1236f8cdda3e1180de62c7291992b9261cb2b16f48a417		 pdf-javascript-stream PDF /JS object 7 at offset 0x9C0 498 bytes

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