Malicious PDF — malware analysis report

Static analysis result for SHA-256 11c1d2f5e4f2bf03…

MALICIOUS

PDF

12.6 KB
MD5: f9788d6ecc06c6530ff361874aed1046 SHA-1: 4942595bf3ff7b97e26a56fef221eec90c7a3d3a SHA-256: 11c1d2f5e4f2bf031cf3a9385bfae0e1a695be3f7c851549bc749f02af63bbd3
168 Risk Score

Malware Insights

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

The sample is a PDF file that exploits CVE-2010-0188, a known vulnerability in Adobe Reader related to XFA forms. The embedded JavaScript attempts to download and execute a second-stage payload. While the specific family is not identifiable, the exploit and embedded script clearly indicate malicious intent.

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
bbee91881f35db2f9cbb165aa74518c3461116d97e71d366518a658e2b6bc48f
pdf-embedded-script PDF raw stream script payload at offset 0x359 12197 bytes