Malicious PDF — malware analysis report

Static analysis result for SHA-256 4fd21347be4ea5e6…

MALICIOUS

PDF

3.3 KB
MD5: 1be81eaa5c397e56533c8c9c99adc604 SHA-1: 997e38b5ed5f5a449d1aa31496ec7191f78c8491 SHA-256: 4fd21347be4ea5e64885194d15a3b9f4c65919016926b67a6c100775fecbbac2
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 also detected this file as Pdf.Exploit.Agent-36121, suggesting it's a known exploit. The embedded JavaScript is the primary mechanism for exploitation, likely leading to the download and execution of a secondary payload. However, the specific actions of the JavaScript could not be fully determined due to potential obfuscation or truncation.

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
e0187dfdb0969274dbc79bfe90f82072439ca8759a7771771d0124eed4bc1aaf		 pdf-javascript-stream PDF /JS object 7 at offset 0xA82 328 bytes

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