Malicious PDF — malware analysis report

Static analysis result for SHA-256 95690d9a0b32f94c…

MALICIOUS

PDF

44.6 KB
MD5: 273f048e345a2ecb167694ad7fb45e79 SHA-1: 21edd7bf4ecde8e5e8d8425e871d35d24fe6d964 SHA-256: 95690d9a0b32f94cab84ff7ff5d98b826995530c07985453893368fb6608044c
116 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1566.002 Spearphishing Attachment

The PDF contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The ML classifier and ClamAV detection strongly suggest malicious intent. While the exact payload is not clear from the provided evidence, the presence of JavaScript within a PDF commonly indicates an attempt to exploit vulnerabilities or deliver a secondary payload. The embedded URLs are related to XFA forms, which can be a vector for exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9558

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
b436a54485729085918426d6648e54d54d5ac6aa868f72f2c6ab6994d4727743		 pdf-javascript-stream PDF /JS object 12 at offset 0xA1D9 3143 bytes

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