Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2fecf33acb8eeca…

MALICIOUS

PDF

4.2 KB First seen: 2026-05-09
MD5: ff9a67b65b4265e646b961d41f32b319 SHA-1: 4d17e937420c6e6c6d93ce670e782e5c04bdb434 SHA-256: f2fecf33acb8eeca68c32978104e8b748c432cc44db6fe6edf6dd2421d643237
110 Risk Score

Malware Insights

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

The PDF exhibits characteristics of malicious intent, specifically the presence of an embedded script payload within a stream. The 'PDF_EMBEDDED_SCRIPT_PAYLOAD' heuristic firing indicates that this script is likely designed to be executed, potentially leading to further compromise. While the document body is unreadable and no specific script content was extracted, the presence of the embedded script and the XFA form suggest an attempt to deliver or execute malicious code.

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/@ 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 12849 bytes
SHA-256: 00a88d302ea5f76d9a46285afbaba0b9a28ef286a309494e687099db2829832e

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