Malicious PDF — malware analysis report

Static analysis result for SHA-256 16b07f1de9eeb6f8…

MALICIOUS

PDF

102.0 KB
MD5: 21f3e8ba5176d7938fb80b8abe7df244 SHA-1: c975c7db421f3dbb4b6b9b18901147a7587b445a SHA-256: 16b07f1de9eeb6f884c3e951e9d0eb58348f269782b0d22d1574580137ff6a2f
168 Risk Score

Malware Insights

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

The sample is a PDF file identified as malicious by multiple heuristics, including a critical alert for CVE-2010-0188, which is an Adobe Reader exploit. The embedded XFA script contains JavaScript that appears to be part of the exploit chain, likely responsible for downloading and executing a second-stage payload. The ML classifier also strongly flagged this PDF as malicious.

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
7dc45305619812397625d27568b19cb8879c9c678483685aa31403eb145a5b14
pdf-embedded-script PDF raw stream script payload at offset 0x346 103703 bytes