Malicious PDF — malware analysis report

Static analysis result for SHA-256 80560c81a3e30618…

MALICIOUS

PDF

12.8 KB
MD5: b8e74dcd62006a95e9101c6a1b559051 SHA-1: edc9b0a64345b126a841aa86b539566420c66494 SHA-256: 80560c81a3e306181eb4d157b09f678a5652886886aa13a094dc45eea1ae5c15
168 Risk Score

Malware Insights

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

The file is a PDF that leverages the XFA form functionality to exploit CVE-2010-0188 in Adobe Reader. The embedded JavaScript attempts to download and execute a second-stage payload, as indicated by the ML classifier and ClamAV detection. The specific JavaScript code is heavily obfuscated, but its structure suggests a downloader.

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_00000384.bin
ba1fca81572dbb3b3defcf7aeaa2140aa3978a7488ac738604a0f672d2b435ed
pdf-embedded-script PDF raw stream script payload at offset 0x384 12324 bytes