Malicious PDF — malware analysis report

Static analysis result for SHA-256 fefffab333989a17…

MALICIOUS

PDF

45.5 KB
MD5: 3f496f4a07b0e206ee7841fd63150b09 SHA-1: 92b23a0bfb8c4d2f2c762f86b4150fa18e9261cd SHA-256: fefffab333989a17c2c17fd4ff162bd96727afb3db24a18b2521aa105752ac7d
84 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 JavaScript/JScript T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The ClamAV detection for 'Heuristics.PDF.ObfuscatedNameObject' further suggests malicious intent. The embedded JavaScript is likely designed to exploit a vulnerability within the PDF reader to download and execute a secondary payload. The presence of XFA form elements also points to a potentially complex and obfuscated document structure often used in malicious PDFs. No specific malware family could be confidently identified.

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
bcd0c50989a910a0c46f0b1c433104ee8426fff63dcdbd9cb64870bb204f6207		 pdf-javascript-stream PDF /JS object 12 at offset 0xA1D7 3887 bytes

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