Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a10bc100eb7669f…

MALICIOUS

PDF

10.4 KB Authoring application: Lrvwxdervrsdvpdl Vohruyksicddo
MD5: 2b34df5e4a4a9bb4eaab1fa4180e21e0 SHA-1: bf78271030a9a5a3080af111e7d5072aac2e8b2f SHA-256: 2a10bc100eb7669f086a71dbb1737589bf2a4f401c25304dea75cace1a35df44
70 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1059.001 PowerShell

The PDF contains an embedded script payload and an embedded file, strongly indicating malicious intent. The ML classifier assigned a very high probability of maliciousness. The embedded URL points to a .exe file, suggesting the document's purpose is to trick the user into downloading and running a second-stage payload. The document body contains obfuscated JavaScript, which likely contributes to the download or execution process.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • Embedded script payload in PDF stream medium 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 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
  • 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://jso.geokmedia.com/hUh8X40JY3C16noG0y5YV11qwa0n5WZ0Lcc116tU20xFae0yDy40OD150VgI50aeZM0Z5O20e3YW0wgzi03ZTO0LKam0D1A00dc4H0YqTf07yhp0NHgo0s6Jq08myd0GGBl0Fb370vk320NuQb03Ruc06TYi0Vnr10ASp20pxCu0ynXa0ujYu0PVsl0GcGt/vGpL39guP8.exe?YK=xd1Oo9mNMYCJJKtSD&quot
    • http://ns.adobe.com/xdp/
    • http://www.xfa.org/schema/xci/1.0/
    • http://www.xfa.org/schema/xfa-template/2.5/
    • http://ns.adobe.com/xtd/
    • http://www.xfa.org/schema/xfa-data/1.0/
    • http://ns.adobe.com/xfdf/
    • http://www.xfa.org/schema/xfa-form/2.8/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0008.bin
de9a04e58491d61de94dce3397d85f87826f9a99bf9965d37429e3fc9e2c3246		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0x1FB 9526 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 2 long base64-like blob(s).

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