Malicious PDF — malware analysis report

Static analysis result for SHA-256 14168834b9587904…

MALICIOUS

PDF

3.3 KB
MD5: f5c2fc66136e1de897789c357f8fe3dc SHA-1: 2bc86f4eb6aea0bbe9d834abf2b85ae4bec41366 SHA-256: 14168834b9587904f14129d6852c0a3895cb034ca736c805ad238b066d768dd1
106 Risk Score

Malware Insights

MITRE ATT&CK
T1059.007 JavaScript T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The PDF file contains embedded JavaScript, identified by heuristics and ClamAV as malicious (Pdf.Exploit.Agent-36121). The JavaScript code appears to be obfuscated but is designed to execute actions based on the PDF's metadata. This strongly suggests the file is a malicious document intended to exploit a vulnerability and download further malicious content, likely delivered via spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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
9e4588852d152038d5cd1eb8b868586189c0714efa65a7a751f579028aa5381d		 pdf-javascript-stream PDF /JS object 7 at offset 0xA85 333 bytes

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