Malicious PDF — malware analysis report

Static analysis result for SHA-256 09b8736dd8b97b24…

MALICIOUS

PDF

12.7 KB
MD5: e57b87278b05795d29dc54727bd155eb SHA-1: 777d30630eb28210286a12bcd4becbc6ea345f33 SHA-256: 09b8736dd8b97b24797c9423bf7df86951f465a04969a82be97c523b5508cda4
168 Risk Score

Malware Insights

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

The PDF file contains embedded JavaScript within an XFA form, which is designed to exploit the CVE-2010-0188 vulnerability in Adobe Reader. The embedded script likely downloads and executes a second-stage payload, as indicated by the ML classifier and ClamAV detection. The script's functionality is partially obfuscated but appears to involve executing code via JavaScript.

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_00000359.bin
194d6e5790296472bd9cc4c6ecfa3490ceaabb80f7e6049f2cdcc01e95655089
pdf-embedded-script PDF raw stream script payload at offset 0x359 12233 bytes