Malicious PDF — malware analysis report

Static analysis result for SHA-256 152ad7f7aaa9ad34…

MALICIOUS

PDF

24.1 KB
MD5: 3ba801f8f9476fe5df7f41bb36d00567 SHA-1: 5aa02be261a185214b9c162be12377249235ac02 SHA-256: 152ad7f7aaa9ad34887347f80f97ca5a5a7b461f9ae00fe96ba8458a4371c7e0
160 Risk Score

Malware Insights

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

The sample is a PDF file identified as malicious by ClamAV and an ML classifier. It contains an XFA form and exploits CVE-2010-0188, a known vulnerability in Adobe Reader's LibTIFF component, to achieve code execution. The embedded URL, while seemingly benign, is present within the context of an exploit, suggesting it could be part of a download chain. The exploit's nature indicates it's likely used to deliver a secondary payload.

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: Pdf.Exploit.Agent-36821 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-36821
  • 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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