Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d87faf0a2f9b8f7…

MALICIOUS

PDF

75.8 KB
MD5: f73b34323a953d391ca65fd395530052 SHA-1: dc8e18943491ae07b63e8e63925754b1abf4270b SHA-256: 6d87faf0a2f9b8f72b797612f92dda51f54189105fecab7601f19357e845e43a
168 Risk Score

Malware Insights

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

The file is a PDF that leverages the CVE-2010-0188 exploit targeting Adobe Reader's LibTIFF component. This exploit is designed to execute arbitrary code, indicated by the 'embedded_pdf_script' artifact and the critical heuristic firing for this CVE. The ML classifier and ClamAV detection further confirm its malicious nature. The embedded script, though heavily obfuscated, is designed to download and execute a second-stage 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
f52688abbcafb1f323a101bad953d9240fc8c50ab4b55871eddf1eb9b567ef0e		 pdf-embedded-script PDF raw stream script payload at offset 0x286 76868 bytes

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