Malicious PDF — malware analysis report

Static analysis result for SHA-256 68f436830cfd2da4…

MALICIOUS

PDF

99.8 KB
MD5: ebf44506318db10192979210c626445e SHA-1: 32dc56bfac307afc45b7a110d80edb3cfac538e0 SHA-256: 68f436830cfd2da4b008cd98e7f9a1b69643576db133828a2b06ec1e8bf11e2d
116 Risk Score

Malware Insights

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

The critical heuristic firing for CVE-2010-0188 indicates that this PDF document exploits a known vulnerability in Adobe Reader. The presence of an embedded script payload and an embedded file further suggests that the exploit is used to download and execute additional malicious content. The ML classifier strongly supports the malicious verdict.

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
49330cea6f1178c55738bf284d2a919cfb4236fd0f4f5f766043e09ef5089c9c		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101445 bytes

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