Malicious PDF — malware analysis report

Static analysis result for SHA-256 04d67f01e70ae6e5…

MALICIOUS

PDF

99.8 KB
MD5: a3f95a87783b3e1aa3a0766ce3cc2ce3 SHA-1: bbacba690897a34eb905f75c32e8c0860a4144d0 SHA-256: 04d67f01e70ae6e5bd8ed2bdedbdbe1e433eb25c787508432418f1a29d678afe
116 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The sample is a PDF file identified as malicious by an ML classifier. It exploits CVE-2010-0188, a vulnerability in Adobe Reader related to XFA forms, to achieve code execution. The PDF also contains embedded files and scripts, suggesting it's designed to deliver a secondary payload. The benign URLs present are likely decoys or standard XFA schema references.

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 low 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/
    • http://www.xfa.org/schema/xfa-template/2.5/
    • http://www.xfa.org/schema/xfa-data/1.0/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0008.bin
5a01168767da001c32bc1867ca4fcfc27fac9a8ff706774f360f20873727b58d		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101472 bytes

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