Malicious PDF — malware analysis report

Static analysis result for SHA-256 81f9306ba017ccd1…

MALICIOUS

PDF

12.6 KB
MD5: 546f149d6df591a2a2b7f6a2a7b0b6ba SHA-1: eb08ea9dd87fc80ce13c2b774da514bdafe5ee33 SHA-256: 81f9306ba017ccd174159a5cf2f9ca0d984092c401dc029776d41e5947f710c6
168 Risk Score

Malware Insights

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

This PDF file exploits the CVE-2010-0188 vulnerability in Adobe Reader, as indicated by multiple critical heuristic firings. The embedded XFA script contains JavaScript that is likely responsible for downloading and executing a second-stage payload. The ML classifier strongly flags this as malicious, and ClamAV also detects it as Pdf.Exploit.Agent-6136306-0.

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
ec131ad863f0cc624bf45a997196341e2e25ffeb6da51c556bc25fa31b0719b9
pdf-embedded-script PDF raw stream script payload at offset 0x359 12209 bytes