Malicious PDF — malware analysis report

Static analysis result for SHA-256 679d7bf44b36c601…

MALICIOUS

PDF

86.4 KB
MD5: de50149c4454b4e0cfc536943f2c6418 SHA-1: 0d470fe64ee7e3a61556e3bc2cba9a884f443363 SHA-256: 679d7bf44b36c6015927d64c49a31d16800295196ea5cc5025d83c0380bc9b60
176 Risk Score

Malware Insights

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

This PDF file is identified as malicious due to the critical CVE-2010-0188 heuristic, indicating an exploit for Adobe Reader's LibTIFF component. The presence of an embedded script payload and the ML classifier's high confidence score further support this assessment. The exploit likely facilitates the execution of a secondary payload, as suggested by the 'Pdf.Exploit.Dropped-78' ClamAV detection.

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
61f3c4bf9f0bd1b5187802cb8fa7cc2fafdeba0c6ce9a4eb6959fa1bb7c22d45		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 87766 bytes

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