Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b8c159a0fceb381…

MALICIOUS

PDF

16.2 KB
MD5: 4e6f29a07b8221705ce528ad2b161d48 SHA-1: 29e0cc9a4475b356e5f66d479961da8d0c7b4754 SHA-256: 0b8c159a0fceb3819553e893e1f279d87c6a4bdd579d86d3aa22a9aaaf49d2e6
168 Risk Score

Malware Insights

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

The PDF file contains embedded JavaScript within an XFA form, which is known to be exploited by CVE-2010-0188. The embedded script is heavily obfuscated but appears to be designed to download and execute a second-stage payload. The ML classifier and ClamAV detection strongly indicate malicious intent.

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_00000359.bin
dea6e8e8b5d9eefff9ea1aeb7d7f6ddb2b5d252a7195a772a02025f9042ba06e
pdf-embedded-script PDF raw stream script payload at offset 0x359 15901 bytes