Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ad10a5d3b75e7bc…

MALICIOUS

PDF

101.9 KB
MD5: f9325f33dd49aab23bd180e81de82ed3 SHA-1: 92cdc8b625116737fa5e6cadc46a6c11f7651d55 SHA-256: 7ad10a5d3b75e7bc3696a8b8b8d3423d41d5806873ef63a5b4aef345758a768d
168 Risk Score

Malware Insights

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

The sample is a PDF file that contains an embedded XFA form, which is known to be vulnerable to CVE-2010-0188. The embedded script, which appears to be JavaScript, is likely responsible for executing the exploit. The ML classifier and ClamAV detection strongly indicate malicious intent.

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://www.xfa.org/schema/xfa-template/2.5/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_pdf_script_00000346.bin
c3a83789d85c6b0dfbcf3cd746ee6cb2a7f5fc6458b3da19a56bfd02f4772be6
pdf-embedded-script PDF raw stream script payload at offset 0x346 103637 bytes