Malicious PDF — malware analysis report

Static analysis result for SHA-256 69edc246aa858c2b…

MALICIOUS

PDF

76.0 KB
MD5: 498678fbf30bbdf8441975368bc62e93 SHA-1: 86ee706c8ffc4b9b0f88509500ed79985becb2a7 SHA-256: 69edc246aa858c2b100830cc4bc64d0618a65c456d7984eb0bc4384874a8ac1e
176 Risk Score

Malware Insights

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

This PDF file exploits CVE-2010-0188, a known vulnerability in Adobe Reader related to XFA forms. The exploit targets client execution by leveraging the embedded XFA payload. The presence of an embedded file and the ML classifier's high confidence score further support its malicious nature, likely delivered via spearphishing.

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
94a95ca6dc51eb6ce33d0fd18dcbe8df0bd3053e290700564f90224d2f1e093f		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 77064 bytes

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