Malicious PDF — malware analysis report

Static analysis result for SHA-256 e609b7dc962b3c57…

MALICIOUS

PDF

10.1 KB First seen: 2026-05-11
MD5: e3fe69b1cd5f87dde55c95bcd0ffa0a2 SHA-1: d5ee860ea2bf5a9f4de209c227c8ceef1bdbe964 SHA-256: e609b7dc962b3c57fddcbbf87a656dd72104d79ef5e55c80f35428dd6c3bb667
112 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by an ML classifier with high confidence. Static analysis detected an embedded file, which is a common technique for delivering secondary payloads. The document body is unreadable, suggesting it is not intended for human consumption but rather to trigger an exploit. The embedded file, 'embedded_file_obj0001.bin', is the primary indicator of malicious activity.

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

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 13266 bytes
SHA-256: e11a451107927d2bef8a449478d2b3d0757c0acc2525c1843d2da57728a18233
Detection
ClamAV: No threats found
Obfuscation or payload: likely
90 of 154 identifiers look randomly generated (e.g. 'dsyEvXE33QCKfzbTlHQUdDdDlzMWFlbVQ4bGZkdj'); 2 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 0x52E 8642 bytes
SHA-256: 9e397ccfd815104a71a9c75b1266b85f4072c0cb7c2535129f0be717af62b83f
Detection
ClamAV: Win.Exploit.CVE_2010_0188-7
Obfuscation or payload: unlikely

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