Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca06d5047a02f332…

MALICIOUS

PDF

12.5 KB
MD5: 4bb6ae1a1fdbb683a1639b497c1589bf SHA-1: a84f27a9516343645a88815d623912f559555cb0 SHA-256: ca06d5047a02f3328960049093baade6295e91e336934262fea3b002c681bf54
136 Risk Score

Malware Insights

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

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings related to PDF JavaScript actions and streams. ClamAV detections confirm the malicious nature of the file, identifying it as Pdf.Exploit.Agent-36365 and Pdf.Exploit.Agent-36364. The embedded JavaScript is likely responsible for exploiting a vulnerability within the PDF reader to execute malicious code.

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
890365af999cf4d8a3391a7b217e5851b732c6701ae20033123bd6c9e805c38b
pdf-javascript-stream PDF /JS object 76 at offset 0x369 11690 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36364
Obfuscation or payload: unlikely