Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ac330dd2fba47eb…

MALICIOUS

PDF

4.2 KB First seen: 2026-05-08
MD5: 4e641b5612bff177966fd0c56e748374 SHA-1: e1c77a9033b27ebf805479e36507e57cfc1d2d77 SHA-256: 9ac330dd2fba47ebf56bb433105ef04c9670af132d8f9a0a563babbb71c98ca1
110 Risk Score

Malware Insights

MITRE ATT&CK
T1059 Command and Scripting Interpreter T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file exhibits multiple heuristic firings indicating the presence of embedded content and a script payload. The embedded script payload is the most significant finding, strongly suggesting the document is intended to deliver and execute malicious code. While the exact nature of the script's action is not fully detailed, its presence points to a downloader or exploit delivery mechanism.

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 12862 bytes
SHA-256: 661adb101348643cab825105fecfa22e57870232b2a4dffd71ed401cae6bcd4f

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