Malicious PDF — malware analysis report

Static analysis result for SHA-256 142c0442cfc1cc93…

MALICIOUS

PDF

79.2 KB
MD5: 2372d22199ae793a4a83f74502e25ce2 SHA-1: 8ee48643eb765febdb0a3e529f3467018ff93d62 SHA-256: 142c0442cfc1cc9362a2aea9487f536a89f98672a1c0e0c4614c5a0958e2eaa0
116 Risk Score

Malware Insights

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

This PDF file exploits the CVE-2010-0188 vulnerability in Adobe Reader, specifically targeting XFA forms. The exploit is designed to execute arbitrary code, likely leading to the download and execution of a secondary payload. The ML classifier strongly indicates maliciousness, and the presence of an embedded file further supports this assessment.

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
19e485f5b814e1889f50d72f31aa71b6b72b23d8e3ad0b7af07b00db67c47c3d		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 80339 bytes

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