Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c969f8efa1f0f75…

MALICIOUS

PDF

4.1 KB First seen: 2026-05-08
MD5: 80b2cc29627e4a5ea3f6c0b445be2fef SHA-1: 239b7b80c445f7365a90451983573df100dbe53b SHA-256: 8c969f8efa1f0f758b3bd479ff99ac8e3bb85487b7adb072ffd0ffaa116de1e3
110 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.002 Malicious File

The PDF file contains an embedded script payload, indicated by the PDF_EMBEDDED_SCRIPT_PAYLOAD heuristic. This suggests the document is designed to execute malicious code when opened. The presence of an embedded file and an XFA form are also noted, which can sometimes be used to facilitate script execution or obfuscation. Without further script content or network indicators, the exact payload and delivery mechanism remain unclear.

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 12862 bytes
SHA-256: ad5a22cb237772b5d0d1d32250ef71a74298730f8fa54af7e201ecd8dcf89b2d

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