Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d28246fff02f785…

MALICIOUS

PDF

99.8 KB
MD5: f4166282d1eb3434abe15545e157850f SHA-1: f8e0886046b7aad7da346744692ee32025cd0e1c SHA-256: 5d28246fff02f7857909027821868392bee213f4f17231d8e0e1284abb46f9f5
116 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1059.007 JavaScript

The file is a PDF that exploits CVE-2010-0188, a known vulnerability in Adobe Reader's XFA form processing. This exploit is capable of executing arbitrary code, which is often used to download and run additional malicious payloads. While the document body and embedded scripts were truncated, the presence of the CVE-2010-0188 exploit and the ML classifier's high confidence strongly indicate malicious intent.

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
12c28f736d7c4c0253674951d97600fcb9d42f2d4177fb07f8dee52c7d852bd4		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101413 bytes

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