Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f226b96d43e77d6…

MALICIOUS

PDF

99.9 KB
MD5: 0162c11e7c9e5ca0deabf659e6e9384c SHA-1: 696455d53d1799daad4a915453f49b26d0348279 SHA-256: 0f226b96d43e77d6295cbcf583fc7764fe7b80d00c4eddd79c59966cc637444b
116 Risk Score

Malware Insights

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

This PDF file is flagged as malicious by an ML classifier and contains a critical heuristic indicating exploitation of CVE-2010-0188, a known vulnerability in Adobe Reader related to XFA forms. The presence of an embedded file and script payload further supports its malicious nature. The exploit likely serves to download and execute a secondary payload, although no specific URLs for this payload were extracted.

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
77e0a0a6af5037c16bdb1d3c1a2dc33ce99278ce69876369ea61114e301ecfa6		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101543 bytes

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