Malicious PDF — malware analysis report

Static analysis result for SHA-256 46498f9fe245a023…

MALICIOUS

PDF

4.2 KB First seen: 2026-05-08
MD5: 7d0910f3f9afb8f6a4c0087b9640cc16 SHA-1: af15c40de9125309e48316fdf100ddd036ce99de SHA-256: 46498f9fe245a02389557b9d34eec3e29b350b0d6aae8c4cd102091e59989153
110 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1553.005 Mark-of-the-Web Bypass

The PDF file exhibits characteristics of malicious intent, specifically the presence of an embedded script payload within a stream. This indicates the document is likely intended to execute arbitrary code when opened. The XFA form and embedded file heuristics further support this, suggesting a complex delivery mechanism. No specific family could be identified.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • Adobe Reader LibTIFF XFA image exploit — CVE-2010-0188 critical CVE likely CVE_2010_0188
    PDF contains the CVE-2010-0188 exploit template: XFA JavaScript heap-spray setup, a generated TIFF image payload, and assignment of that TIFF data to an XFA image field rawValue to trigger Adobe Reader's LibTIFF parser.
  • Embedded file low PDF_EMBEDDED
    PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic
  • Embedded script payload in PDF stream info PDF_EMBEDDED_SCRIPT_PAYLOAD
    PDF stream bytes contain an HTML/XFA <script> tag without accompanying Windows shell-execution primitives — common in accessible XFA forms but worth surfacing for analyst review.
  • 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/1.0\ In PDF document text
    • http://www.xfa.org/schema/xfa-template/2.5/In PDF document text
    • http://www.xfa.org/schema/xfa-data/1.0/In PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0008.bin pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xEA 12919 bytes
SHA-256: 20c059b88eeb61e3b7b2ac8d7048d7ffec8a2e37ccbfedbd60ce44e98f9a34b9

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