Malicious PDF — malware analysis report

Static analysis result for SHA-256 bab79b6cd9cdbfc4…

MALICIOUS

PDF

4.2 KB First seen: 2026-05-08
MD5: 54c9a6579327193c55aa633f926ab886 SHA-1: d8e15e4964f56888f530f166add30623db4c010a SHA-256: bab79b6cd9cdbfc407e88b35b6140084915a49b241f94db744dda3df96fb445c
110 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1553.005 Mark-of-the-Web Bypass

The PDF file contains an embedded script payload, indicated by the PDF_EMBEDDED_SCRIPT_PAYLOAD heuristic. This suggests the file is designed to execute malicious code when opened. The presence of an embedded file object further supports this, as it could contain the actual payload. The XFA form heuristic is less indicative of malicious intent on its own but can sometimes be used in conjunction with other techniques.

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 12954 bytes
SHA-256: 5dba360d81285277a6ec7d0cb1372e2447b35bda544d88e79cfbd1ad5e975505

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