Malicious PDF — malware analysis report

Static analysis result for SHA-256 63a1ea3e137be03a…

MALICIOUS

PDF

12.6 KB
MD5: b70e081e8b0a82aa2dfe6198edf29bdd SHA-1: 57d5f976345694e76ed154a3e3d832e885d42a70 SHA-256: 63a1ea3e137be03a5300dde9fc704fa31c0a616cab3cedb353afe34b3ca118ba
168 Risk Score

Malware Insights

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

The PDF file contains an embedded script that leverages the CVE-2010-0188 vulnerability in Adobe Reader's LibTIFF component. The script is designed to download and execute a second-stage payload, indicated by the ML_NYX_PDF_MALICIOUS and ClamAV detections. The embedded JavaScript is heavily obfuscated but appears to be responsible for the exploit execution.

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
f173285f460d72f17efd74d8e6caae28638af53762cd4a05970d1efa469c74f9
pdf-embedded-script PDF raw stream script payload at offset 0x359 12209 bytes