Malicious PDF — malware analysis report

Static analysis result for SHA-256 b75f9cf599b5b873…

MALICIOUS

PDF

4.2 KB First seen: 2026-05-08
MD5: 4a048f85afd251d433c764afd7dfe88a SHA-1: 40f6bb7b3032842a0516351be4f4c8c042f80505 SHA-256: b75f9cf599b5b8737575910495422560c9689cd97ac83fb746602d86faf87f73
110 Risk Score

Malware Insights

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

The PDF file was flagged for containing an embedded script payload. This indicates the document is likely intended to deliver and execute malicious code. The presence of an embedded file further supports this, as it could contain the actual exploit or malware. The exact nature of the script payload could not be determined due to obfuscation or truncation.

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 12944 bytes
SHA-256: 1a9fd7127ba2bd56ac69477f79c896325afad96a7286c2ec57b5722b5c2db1a1

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