Malicious PDF — malware analysis report

Static analysis result for SHA-256 687f388aacba090d…

MALICIOUS

PDF

16.2 KB
MD5: bcc3dc847ba4badccc8aa5aae411099c SHA-1: d02aba7fc966c47f993d944d81cce2235989e032 SHA-256: 687f388aacba090d67297a02e46be3dddc503c9a82bc761089711d21b40cb8fc
168 Risk Score

Malware Insights

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

The PDF file contains embedded XFA (XML Forms Architecture) data which is known to be a vector for exploits. Heuristics indicate a critical vulnerability, CVE-2010-0188, which targets Adobe Reader's LibTIFF component. The embedded script, although heavily obfuscated and truncated, likely contains JavaScript intended to download and execute a second-stage payload, leveraging the identified exploit.

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
f06d904153084cf16823b470f42c012cc66dcf0abbdbc94d0cbeae0208c2796d
pdf-embedded-script PDF raw stream script payload at offset 0x359 15901 bytes