Malicious PDF — malware analysis report

Static analysis result for SHA-256 917a21dfdbfb6977…

MALICIOUS

PDF

12.3 KB
MD5: 78c4b268e9df7ae398b6161f498fa0e8 SHA-1: d6f4d751c6b777a0454c77a843a168565f5c23c7 SHA-256: 917a21dfdbfb697780369986da4bdcb6a4afd8a83970f1d219f527909722317d
136 Risk Score

Malware Insights

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

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings related to PDF JavaScript actions and streams. ClamAV detections for 'Pdf.Exploit.Agent-36365' and 'Pdf.Exploit.Agent-36364' confirm its malicious nature. The embedded JavaScript is likely responsible for executing the exploit within the PDF.

Heuristics 4

  • ClamAV: Pdf.Exploit.Agent-36365 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-36365
  • ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV
    ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
  • 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
fa1fab9d4384c9206f1f8a2a83154a677ca81f07c52d148552088de094928626		 pdf-javascript-stream PDF /JS object 76 at offset 0x369 11493 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36364
Obfuscation or payload: unlikely

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