Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed9d9baacfb3ff2d…

MALICIOUS

PDF

12.5 KB
MD5: 40100fb8231fa0585c5aa287e6c64edc SHA-1: e18ef2d04de202ed38dfdd80796966fc095c7b99 SHA-256: ed9d9baacfb3ff2dea7facfb22c2017643ef19bea591a0829bfdeb1b0b9339d5
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, likely exploiting a vulnerability to execute the embedded script. The script's purpose is to download and execute a second-stage payload.

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
7916946ceadeb8be1a83e5335bb203e5d2676c3662d860434fb5a6a519225c71		 pdf-javascript-stream PDF /JS object 76 at offset 0x369 11671 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36364
Obfuscation or payload: unlikely

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