Malicious PDF — malware analysis report

Static analysis result for SHA-256 143dbe432d4e6b7d…

MALICIOUS

PDF

78.9 KB
MD5: d4c75260f0c9683af375c5373a0b8d39 SHA-1: 427acc25781d9eaa9c4036cc1535e15bc9164464 SHA-256: 143dbe432d4e6b7d395e44deb7b159dcf1a4c8d89f1101f905b40294bea07e28
116 Risk Score

Malware Insights

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

The PDF file exploits CVE-2010-0188, a vulnerability in Adobe Reader's handling of XFA forms, to achieve code execution. The presence of an embedded file and XFA form structure further supports this attack vector. While the document body and scripts were not fully extracted, the critical heuristic firing indicates a direct exploitation attempt.

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
f81cce0e2ab727531d00d153443b5af56c9dbe865d4d22bc3563064fa882e992		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 80008 bytes

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