Malicious PDF — malware analysis report

Static analysis result for SHA-256 902af59ced64fff6…

MALICIOUS

PDF

45.0 KB
MD5: 7d5a1e79e87d587beb98c19fb6f75164 SHA-1: 9638794f219be233010c9dcb1f5f85fc7cb73ffa SHA-256: 902af59ced64fff6c37db099c699e41660b7a15a01691ad4240f13c08525ce7e
76 Risk Score

Malware Insights

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

The PDF file contains embedded JavaScript, as indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. ClamAV detection of 'Pdf.Exploit.Agent-36128' further confirms its malicious nature. The embedded JavaScript is likely responsible for exploiting a vulnerability within the PDF reader to execute malicious code, potentially downloading a second-stage payload.

Heuristics 3

  • ClamAV: Pdf.Exploit.Agent-36128 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-36128
  • 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0008_000.js
a139cee78e3c732051943ee78934580c7a467f85a0bbc81e25ae29309019e95c		 pdf-javascript-stream PDF /JS object 8 at offset 0x1E7 45305 bytes
legacy_pdfkit_stage_000.js
5ba9188cc66c48ccc0a668327d018eba161bf4d55c4f0a1e67331c4da09d87ee		 deobfuscated-js double percent-decoded annotation JavaScript at offset 0x1E7 33047 bytes

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