Malicious PDF — malware analysis report

Static analysis result for SHA-256 61909ae6a3d7f91d…

MALICIOUS

PDF

16.2 KB
MD5: 424edbcf4b76407f9dc7548f081bf010 SHA-1: 631a7ccce3c442744f703308823f80a810decdcc SHA-256: 61909ae6a3d7f91d8e94be6f440252596b090c6739c36b1b4da0a6bc37df9308
168 Risk Score

Malware Insights

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

The PDF file contains embedded JavaScript and triggers the CVE-2010-0188 exploit, indicating it's designed to execute arbitrary code. The embedded script, though heavily obfuscated, likely contributes to the exploit's functionality by preparing or delivering the payload. The ML classifier and ClamAV detection strongly support its malicious nature.

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
64e93dc158d03af17aa0fb59ffd12c418ae6cb98433bc169242d728b882fe1c9
pdf-embedded-script PDF raw stream script payload at offset 0x359 15901 bytes