Malicious PDF — malware analysis report

Static analysis result for SHA-256 64f1cedaa5c0827f…

MALICIOUS

PDF

76.1 KB
MD5: de706b344aa97d2eeaa1afdd8b3c2c64 SHA-1: a007f0c10e9d7a775ff5a0661cfb95fca83110f2 SHA-256: 64f1cedaa5c0827fb5aed773468b18c35d6cdb1f0487143b83d48ea4773acb59
168 Risk Score

Malware Insights

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

The PDF file contains embedded JavaScript that exploits CVE-2010-0188 in Adobe Reader, a known vulnerability for client-side code execution. The embedded script is heavily obfuscated but appears to be designed to download and execute a second-stage payload. The ClamAV detection also confirms the malicious nature of the file.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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-6136306-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-6136306-0
  • 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_pdf_script_0000026c.bin
4ff1b9e15de409d6f079d1e7805d320636bc2f9d09c07e5c0b925ed0e6cb259f		 pdf-embedded-script PDF raw stream script payload at offset 0x26C 77172 bytes

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