Malicious PDF — malware analysis report

Static analysis result for SHA-256 8632fba0e270d7be…

MALICIOUS

PDF

44.8 KB
MD5: 0a821c10feeab8f477ce29f7eeee4904 SHA-1: 5519b70a1ee92d14f45f7572181f89a496b81222 SHA-256: 8632fba0e270d7be7a744156a7a6fa437cce417e4920bbd9749ea138e68f03fa
116 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 JavaScript/Shell Script Execution: JavaScript Execution

The PDF file was flagged by multiple heuristics, including ML classification and ClamAV detection for obfuscated objects, indicating malicious intent. Embedded JavaScript was detected, which is commonly used to download and execute further payloads. The presence of XFA form elements and JavaScript actions further supports this attack pattern. The extracted URLs, while mostly unknown or benign, are part of the document's structure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

Heuristics 5

  • ClamAV: Heuristics.PDF.ObfuscatedNameObject critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Heuristics.PDF.ObfuscatedNameObject
  • 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.
  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://ns.adobe.com/xdp/
    • http://www.xfa.org/schema/xci/2.6/
    • http://www.xfa.org/schema/xfa-template/2.6/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0012_000.js
9c882500b99bfa845acccc90c7fb5d98c9a82365184360d3eb1ddd393e44233d		 pdf-javascript-stream PDF /JS object 12 at offset 0xA1F0 3294 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.