Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6544179a8609f0a…

MALICIOUS

PDF

4.1 KB First seen: 2026-05-08
MD5: 3d2c59e5fe9fb0dc6d374ea5edb3ac8a SHA-1: 6e7567c002c45fa7fb1a69ea2b80c3d1e742558d SHA-256: e6544179a8609f0abf5bcd39d10eac24990959012fbc2e34c4b4c35fa96f6034
110 Risk Score

Malware Insights

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

The PDF document triggered heuristics indicating an embedded script payload and an embedded file. The presence of an XFA form is also noted. While the document body is unreadable, the embedded script payload suggests the file is designed to execute malicious code. The exact nature of the payload is unclear due to the lack of script content in the provided evidence.

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 12840 bytes
SHA-256: 8a492488d980246695a4ab9d88ecf9a40b6f8b4954a689580c1f99d371d1faeb

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