Malicious PDF — malware analysis report

Static analysis result for SHA-256 66ba9bc0c5e0e68b…

MALICIOUS

PDF

89.8 KB
MD5: e422d1658aa93d653d8ab91f3c2c654e SHA-1: 6a2c55642e293421a35028fdd06e4afeaf3a6178 SHA-256: 66ba9bc0c5e0e68be2f5caafb20da25a07c1ba61bffca9f89880e4b58072c21c
176 Risk Score

Malware Insights

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

The PDF file contains an embedded exploit targeting Adobe Reader's handling of XFA forms and TIFF images, specifically CVE-2010-0188. This exploit is designed to execute a malicious payload, as indicated by the critical heuristic firings and the ClamAV detection name 'Pdf.Exploit.Agent-6136306-0'. While the document body contains garbled text, the primary attack vector is the embedded exploit.

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.Agent-6136306-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-6136306-0
  • 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
97d491c381b87795513ced51da5767c8c3176f5250f34dcf5610999cb7f439b6		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 91209 bytes

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