Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c9d28595ad19a27…

MALICIOUS

PDF

12.8 KB
MD5: ed36d5018e42a06ba057c4cba4b07a96 SHA-1: bf51f782e73d5248f6b0b0c6cec8ff9def400f34 SHA-256: 7c9d28595ad19a27bf963e99aa779ac0828dd71fe64bc0c78d05588259063d7e
160 Risk Score

Malware Insights

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

The sample is a PDF file identified as malicious by multiple heuristics, including a critical detection for CVE-2010-0188, an Adobe Reader exploit targeting XFA forms. The ML classifier also strongly flagged the file. The embedded URL, while seemingly benign, is present within the document structure. The presence of XFA and the exploit detection strongly suggest the file is designed to execute arbitrary code, likely a second-stage payload, leveraging the JavaScript engine within Adobe Reader.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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: Js.Exploit.HTML-30 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Js.Exploit.HTML-30
  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic
  • 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://www.xfa.org/schema/xfa-template/2.5/

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