Malicious PDF — malware analysis report

Static analysis result for SHA-256 8832d32750af8492…

MALICIOUS

PDF

12.0 KB
MD5: 6a3c6590b9fc3d6d893c5d5a320cf30a SHA-1: 221e78aea6a242ce0fd6c7c7cc8c4f7779df9d26 SHA-256: 8832d32750af8492cd13e066f92cfaf4fa0b3977922e10f7f2dc43d8d39c1c55
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 and JavaScript. ClamAV detections for 'Pdf.Exploit.Agent-36365' and 'Pdf.Exploit.Agent-36364' strongly suggest this is a malicious PDF exploiting a known vulnerability. The embedded JavaScript is the likely mechanism for delivering a secondary stage, although its specific actions are not detailed in the provided evidence.

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
1f1a16ef577269826ebda5150953523a2499ffdca3bf0799f2f69947fdadd7aa		 pdf-javascript-stream PDF /JS object 76 at offset 0x369 11193 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36364
Obfuscation or payload: unlikely

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