Malicious PDF — malware analysis report

Static analysis result for SHA-256 6368e9719aee027b…

MALICIOUS

PDF

86.5 KB
MD5: 322a9d5e7741c5e64f26f24e148055d9 SHA-1: 837469f80bb549cd6e7b5ca47af6d4ec120c23bb SHA-256: 6368e9719aee027bf27d2566d39ece1e14594362f3f9b6c6615a928765067828
176 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 the LibTIFF component within XFA forms. The heuristic firings indicate an embedded exploit payload, and the ML classifier strongly suggests malicious intent. The exploit likely leads to the execution of a second-stage payload, although the exact nature of that payload is not detailed in the provided evidence.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • ClamAV: Pdf.Exploit.Dropped-78 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Dropped-78
  • 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
411b6a8c9b28ee02550d68c55ebb83bd1149bebf94260a3a9b509dcde4ea7cd1		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 87870 bytes

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