Malicious PDF — malware analysis report

Static analysis result for SHA-256 82580f06ba81ac21…

MALICIOUS

PDF

12.8 KB
MD5: 19ce15f48c502aa68f64f7f766af359b SHA-1: b7f2daa5dd922210966c3bfd7780a3dec9bb3aec SHA-256: 82580f06ba81ac2101cc75935fe1ad14ad1b412777cc3b0c86546248c719831d
168 Risk Score

Malware Insights

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

The PDF file contains embedded JavaScript and triggers a critical heuristic for CVE-2010-0188, indicating exploitation of a known Adobe Reader vulnerability. The embedded script is heavily obfuscated but its presence, combined with the exploit, strongly suggests the file's purpose is to download and execute a secondary malicious payload. No specific malware family could be confidently identified.

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
721b3f5c6ef9c6a0fca0a1ad7d456bc33285f39eff8d1e33d509a618a8ad2e5d
pdf-embedded-script PDF raw stream script payload at offset 0x384 12288 bytes