Malicious PDF — malware analysis report

Static analysis result for SHA-256 655d13ad2994608f…

MALICIOUS

PDF

45.9 KB
MD5: 7d258d060fc45eff76cb58105fa85d94 SHA-1: 892363b98638c505274df0a04f415a0b821ffb0e SHA-256: 655d13ad2994608fdfa4199a9deedc4a9c728dd7d2aedd9ec997ceff651fd6b2
176 Risk Score

Malware Insights

MITRE ATT&CK
T1059.007 JavaScript T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The PDF file contains embedded JavaScript and is flagged as an exploit cluster targeting XFA forms. The JavaScript is heavily obfuscated but likely attempts to download and execute a secondary payload. The benign URLs extracted are likely part of the XFA schema and not directly related to the malicious payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9608

Heuristics 6

  • PDF JavaScript exploit cluster critical PDF_JS_EXPLOIT_CLUSTER
    PDF combines an executable JavaScript/action surface with exploit staging indicators such as eval/unescape/fromCharCode, XFA script content, or a related CVE pattern. Benign form JavaScript remains low-severity, but this correlated cluster is high-confidence malicious behavior.
  • 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
c441fb2ac3e3b56b4e8f0b0fc5338c6355d837d6f5e87f7229a4edfd50dbfdd1		 pdf-javascript-stream PDF /JS object 12 at offset 0xA1F3 4287 bytes

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