Malicious PDF — malware analysis report

Static analysis result for SHA-256 683e9dc1123d3677…

MALICIOUS

PDF

75.8 KB
MD5: 3c828c6fe078ea5580d5f3af3392eabb SHA-1: eaf74a4ff855cf9675b71569a25b8852aa3b9010 SHA-256: 683e9dc1123d367731152a0263af7fcebc6548d453fd5ad5610e03977dfce650
168 Risk Score

Malware Insights

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

This PDF file is identified as malicious due to the critical heuristic firing for CVE-2010-0188, indicating an exploit targeting Adobe Reader's LibTIFF component. The embedded XFA script, although obfuscated, likely contains JavaScript code that is executed by the exploit. The script's purpose is to download and execute a second-stage payload, as suggested by the heuristic 'PDF_EMBEDDED_SCRIPT_PAYLOAD'.

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.
  • ClamAV: Pdf.Exploit.Agent-6136306-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-6136306-0
  • 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_pdf_script_00000286.bin
45580760624711f46648b55f96878b18b9e8873a7e81663df759515a9dd51228		 pdf-embedded-script PDF raw stream script payload at offset 0x286 76948 bytes

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