Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f749384dec77c66…

MALICIOUS

PDF

106.5 KB
MD5: f075d0a6a5efeb7092c3dd4e56be84ee SHA-1: 9ace925c5e5af169016ea899bb5ebd8b1c201193 SHA-256: 0f749384dec77c66bcd4b9183c1e049f39061bbc2f211eb60ed772063eb265eb
168 Risk Score

Malware Insights

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

The sample is a PDF file that exploits the CVE-2010-0188 vulnerability in Adobe Reader, specifically targeting XFA forms. The embedded JavaScript attempts to download and execute a second-stage payload, indicated by the ML_NYX_PDF_MALICIOUS heuristic and ClamAV detection. The embedded URL is confirmed benign, but the exploit itself is the primary threat.

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
212bef90f474b1cd8e08b89f6d6e2d0db6ce544746a16b5eb9a6a1f3d1d595ec
pdf-embedded-script PDF raw stream script payload at offset 0x346 108356 bytes