Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a58c6eb245f98ef…

MALICIOUS

PDF

73.4 KB
MD5: 6a0ced281eb79e48ecf3bf6ca6de53db SHA-1: 52abdff1459359387a47f8f74618c088625b22bd SHA-256: 6a58c6eb245f98effb0c275c437e53852185499e41cd275d767a1b4e962165a0
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 feature to exploit CVE-2010-0188, a known vulnerability in Adobe Reader's LibTIFF component. The embedded JavaScript, although truncated, is indicative of malicious code execution. ClamAV also detected this as Pdf.Exploit.Agent-6136306-0, further confirming its malicious nature. The script likely downloads and executes a second-stage payload.

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_0000034e.bin
c9a39c1e19624ca5412921e500043051fcd20f3548b5201d7f237102dba67241
pdf-embedded-script PDF raw stream script payload at offset 0x34E 74422 bytes