Malicious PDF — malware analysis report

Static analysis result for SHA-256 77d4e23adc24ff23…

MALICIOUS

PDF

16.1 KB
MD5: d74954732f402f033c6b1c229b523c4b SHA-1: aa64be99ab4c1125875a059a5543cfbbe72bf19d SHA-256: 77d4e23adc24ff23299da050e3770ba01aac414421e990ed617f8301bb50ed75
168 Risk Score

Malware Insights

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

The file is a PDF that contains an embedded XFA form and triggers the CVE-2010-0188 exploit, which is known to target Adobe Reader. The embedded script, identified as JavaScript, likely contains obfuscated code intended to download and execute a second-stage payload. ClamAV also detected this file as malicious, specifically as Pdf.Exploit.Agent-6136306-0.

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_00000354.bin
4cb41ebaea6cbfccb757f4ce8c49189c94364009c027f5dd6a6b2a8cae413fae
pdf-embedded-script PDF raw stream script payload at offset 0x354 15736 bytes