Malicious PDF — malware analysis report

Static analysis result for SHA-256 937b13e12a16e723…

MALICIOUS

PDF

3.3 KB
MD5: 4d63dfdb910dd95ff58d96405966701a SHA-1: 09859cfd51f7b5f82ead1b8211f6c9dbd12009fd SHA-256: 937b13e12a16e723d501da0a59a0dc52764f432ce7defe3f63b1d08974fba695
76 Risk Score

Malware Insights

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

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including 'PDF_JAVASCRIPT' and 'PDF_JS'. ClamAV also detected this as 'Pdf.Exploit.Agent-36121'. The embedded JavaScript is the primary mechanism for exploitation, likely leading to the download and execution of a second-stage payload. The exact behavior of the script is not fully discernible due to potential obfuscation, but its presence within a PDF and the ClamAV signature strongly suggest malicious intent.

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
4c741ee07c81e00247f074d19b41234598b4b1b50f18236b0f936134002b77c3		 pdf-javascript-stream PDF /JS object 7 at offset 0xA86 315 bytes

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