Malicious PDF — malware analysis report

Static analysis result for SHA-256 c99aacbf6e2a97b4…

MALICIOUS

PDF

12.2 KB
MD5: f666a11443016324e069273cc73c067f SHA-1: 03bd518eaf1fcaf62ac7422425e79d55d84eb296 SHA-256: c99aacbf6e2a97b49e1993664633b878bcb2e8feccfa44e8d38ce167476fda64
106 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Exploit.Agent-36723'. It contains embedded JavaScript, indicating an attempt to execute malicious code upon opening. The ML classifier also strongly indicated maliciousness. The primary attack vector appears to be exploiting a vulnerability within the PDF reader to run arbitrary JavaScript.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • ClamAV: Pdf.Exploit.Agent-36723 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-36723
  • 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
cb219accd808657f76ad0bcfa88c11ae9c438a44fcac7d94ce87f2e665f0bbac		 pdf-javascript-stream PDF /JS object 76 at offset 0x369 11424 bytes

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