Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ac883a08372bad5…

MALICIOUS

PDF

102.3 KB
MD5: 17ccab4c7d5cf286d8e4cafd4289cb6e SHA-1: 26bb5ddc99c301d8f2a5a8199e90275a2e0069d3 SHA-256: 5ac883a08372bad5c137c2a1e2e77983510d8862daa825379cea4a750146e7dc
168 Risk Score

Malware Insights

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

The PDF file contains embedded XFA content which is known to be vulnerable to CVE-2010-0188. The embedded script, which appears to be JavaScript, is likely responsible for executing the exploit. The ML classifier and ClamAV detection strongly indicate malicious intent, pointing towards an exploit delivery mechanism.

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
78047aca36dff70c01fc41f24c4be640c8cbb8587b3ece07ecf87a22ea7f1ba4
pdf-embedded-script PDF raw stream script payload at offset 0x346 103984 bytes