Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1d56b7332964976…

MALICIOUS

PDF

10.1 KB First seen: 2026-05-10
MD5: 1aa78789cf50c909fb6e77482eab90f3 SHA-1: ac2ab39ac679812af71686297e91ca06395415a6 SHA-256: a1d56b7332964976a2bab68c061240696b48404b6a94757aee92c144d6faba52
112 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PSSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
  • 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/xci/1.0/In PDF document text
    • http://www.xfa.org/schema/xfa-template/2.4/In PDF document text
    • http://www.xfa.org/schema/xfa-data/1.0/In PDF document text
    • http://ns.adobe.com/xtd/In PDF document text
    • http://www.xfa.org/schema/xfa-form/2.8/In PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0001.bin pdf-embedded-file PDF EmbeddedFile object 1 at offset 0x5A 13408 bytes
SHA-256: 73b3e51c7cbb79151de2dbe594d2cc8dc4566e93569bb9a3111ebb9e6d89eb2f
Detection
ClamAV: No threats found
Obfuscation or payload: likely
96 of 166 identifiers look randomly generated (e.g. 'HTvug7jtlRMmcm9xV3dUb2Z1ZG9oMTRMWk93UDhn'); 1 string-concatenation chain(s) — consistent with name-mangling obfuscation. Carved artifact contains 1 long base64-like blob(s).
xfa_image_rawvalue_000.tif pdf-xfa-image-tiff XFA image/rawValue TIFF payload near offset 0x57F 8642 bytes
SHA-256: af6ac962a3fc225bd6c8ccecc465355ab87557c0e20c5f76b5e8e25bb2a5d6b0
Detection
ClamAV: Win.Exploit.CVE_2010_0188-7
Obfuscation or payload: unlikely

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