Malicious PDF — malware analysis report

Static analysis result for SHA-256 421d5910349f9380…

MALICIOUS

PDF

24.1 KB
MD5: c5626df1e18b9cc820ce03ac25140db8 SHA-1: 91a3a1e7d1c1878499f58fb7d7470cbe4c5328d1 SHA-256: 421d5910349f9380811461d60baa9386845a6d253a284f9f753355f2df4a82ee
128 Risk Score

Malware Insights

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

The sample is a PDF document that utilizes XFA forms, triggering critical heuristics for CVE-2010-0188, indicating an exploit targeting Adobe Reader. The embedded URL, while seemingly benign, is part of the exploit chain. The document body contains obfuscated JavaScript-like code, likely part of the exploit's payload delivery mechanism, though its exact function is obscured.

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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