Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6b954ee087fbe54…

MALICIOUS

PDF

4.2 KB First seen: 2026-05-08
MD5: 4ba63106e0c208482405ea3cd15a4055 SHA-1: 721c235af5348b60d3f0cf2221e68180a6357dba SHA-256: b6b954ee087fbe5485395265fdee3faa18646def07526b452d7740ecf0420b32
110 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: User Execution T1566.001 Phishing: Spearphishing Attachment

The PDF file exhibits characteristics of malicious intent, specifically the presence of an embedded script payload. This payload is likely designed to execute arbitrary code, potentially leading to further compromise. The XFA form and embedded file heuristics further support the suspicious nature of this document. While the exact script functionality is not detailed, its presence strongly indicates a malicious purpose, such as delivering a secondary payload.

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 13011 bytes
SHA-256: ba86fc3661ee0dfe590194977072a1400541cecc62db4e23c51e91060144c2ea

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