Malicious PDF — malware analysis report

Static analysis result for SHA-256 28762e91c0eb9c3a…

MALICIOUS

PDF

45.4 KB
MD5: 3cfecea754535b607cf9fb35455e8040 SHA-1: aa22ff8cce562de50551d3cfb5ebd59b8ca00fcd SHA-256: 28762e91c0eb9c3a11ab812a038ea32150c85843445c13aa1393409b17a72e0e
84 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1566.001 Spearphishing Attachment T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. This JavaScript is likely designed to download and execute a secondary payload, a common technique for malware delivery. The ClamAV detection of 'Heuristics.PDF.ObfuscatedNameObject' further supports the malicious nature of the file. While specific URLs are present, they are not directly indicative of the payload's destination.

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
2a199df86900e1f20d156743633c921ec4fae077a1da9e63f32c110831450e19		 pdf-javascript-stream PDF /JS object 12 at offset 0xA1FF 3876 bytes

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