Malicious PDF — malware analysis report

Static analysis result for SHA-256 84d50e1fbb715b7a…

MALICIOUS

PDF

100.0 KB
MD5: 10a4359127c6ebd00d9920852e6fc55d SHA-1: 7e63c93357d7811a809457ddbda229a17b88db2d SHA-256: 84d50e1fbb715b7a6233d85a15101779c92aff1f7513dab3a627b65df4c266f6
116 Risk Score

Malware Insights

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

This PDF document contains an embedded XFA form that exploits the CVE-2010-0188 vulnerability in Adobe Reader. The exploit payload is directly embedded within the XFA stream, indicating an attempt to achieve arbitrary code execution upon opening the document. The ML classifier strongly flags this PDF as malicious, supporting the conclusion that it is designed to deliver a secondary payload.

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
c66b3c93278709dddf245c9f7997a85930ba761ede8e20a838a01e5e81ae4a37		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101695 bytes

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