Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d91c8c15438cad9…

MALICIOUS

PDF

93.5 KB
MD5: 9215e4dbeef9e697d2101e5bd9329b20 SHA-1: 20d1068be114ac3ce67dce76d376ecdbdfc0a09d SHA-256: 6d91c8c15438cad9d55b1a31a45b267d32525f4b4ad1a39630dd2e6b72152841
176 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The PDF file contains an embedded exploit targeting CVE-2010-0188 in Adobe Reader's XFA forms. This exploit is designed to execute a payload, as indicated by the critical heuristic firings and the ML classifier. The embedded file and script markers further support the malicious intent.

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
c213f296b82fe7145da36d4371efc1e47d9df675f576f9389b002837dd9baa23		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 94995 bytes

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