Malicious PDF — malware analysis report

Static analysis result for SHA-256 2dd08fb2b3d3be80…

MALICIOUS

PDF

12.6 KB
MD5: a1d30f2eda64058b0955c762f05f83d0 SHA-1: e5c7b6ef8d0c5936d653290f6435fef1e03bcb29 SHA-256: 2dd08fb2b3d3be804d87f78a357cc266e56f64001875dd353d1e95bf2cb60dfe
106 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 JavaScript T1204.002 Malicious File

The file is identified as a malicious PDF by multiple heuristics, including a high-confidence ML classifier and ClamAV detection. Embedded JavaScript, flagged by heuristics, is likely used to exploit vulnerabilities within the PDF reader. The specific ClamAV detection name 'Pdf.Exploit.Agent-36723' suggests a known exploit, though the exact mechanism requires further analysis.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • ClamAV: Pdf.Exploit.Agent-36723 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-36723
  • 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_obj0076_000.js
61cdfdcf5939a18e24ea7a5a9b38c214c4d6d885ca43784f654ef1071020a3c8
pdf-javascript-stream PDF /JS object 76 at offset 0x369 11752 bytes