Malicious PDF — malware analysis report

Static analysis result for SHA-256 798de978b067938e…

MALICIOUS

PDF

89.8 KB
MD5: 62e9812257776b73e779fcf6672a6140 SHA-1: aea7bdf89e76792bc28c6f643a84722fb95c9429 SHA-256: 798de978b067938e25666ffba55511ce0d0ca43eb5ec3e8b8613ffcec84059b6
168 Risk Score

Malware Insights

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

The PDF file contains an embedded XFA form that exploits CVE-2010-0188 in Adobe Reader, leading to the execution of a malicious payload. The embedded JavaScript, though obfuscated, is likely responsible for downloading and executing a second-stage payload. The benign URLs present are likely for legitimate XFA schema references.

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://ns.adobe.com/xdp/
    • http://www.xfa.org/schema/xfa-template/2.5/
    • http://www.xfa.org/schema/xfa-data/1.0/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_pdf_script_0000023e.bin
c8f9717f34f7a112ae759da82e9a456e0de4a15cc6aace306490af4a1637ffd7
pdf-embedded-script PDF raw stream script payload at offset 0x23E 91193 bytes