Malicious PDF — malware analysis report

Static analysis result for SHA-256 023b5935d0ceda9d…

MALICIOUS

PDF

63.6 KB
MD5: 21a318dfed554127455740965c2580b8 SHA-1: 6c8cd09dd7d47759b3cfa28477f8b2b6d66f98e7 SHA-256: 023b5935d0ceda9d01ac19dce50b93878bc155c3a0237b73301d6d6935dc6b3b
156 Risk Score

Malware Insights

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

The PDF sample contains a critical heuristic firing for CVE-2010-0188, indicating exploitation of Adobe Reader's LibTIFF component via XFA forms. This exploit is designed to achieve arbitrary code execution. The presence of embedded script payloads and an embedded file further supports the malicious intent, likely for downloading and executing a secondary stage.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • XFA form contains risky executable script high CVE related PDF_XFA_SCRIPT
    PDF embeds an XFA form whose script block contains exploit, submission/launch, or shell-execution primitives. Ordinary LiveCycle print/update scripts are left as generic XFA/JS signals unless stronger behavior is present.
  • 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
50370e801969b114096bc091dd4a52d665b44d3eb84d2105547d8dce6b46cbd5		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 64386 bytes

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