Malicious PDF — malware analysis report

Static analysis result for SHA-256 10b5daa8238858b5…

MALICIOUS

PDF

12.8 KB
MD5: ec1a2c7f12c7586ac0c3373de59fe7b8 SHA-1: 5f5b96dd10dd4c72c7562ba5134a9c3b108b8ec9 SHA-256: 10b5daa8238858b531853273fb58f601b255fe06e06d7b8b642381dd0f4f80a9
168 Risk Score

Malware Insights

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

The PDF sample contains embedded JavaScript within an XFA form, which is known to be exploited via CVE-2010-0188. The embedded script attempts to download and execute a payload, indicated by the ML classifier and ClamAV detection. The script's obfuscated nature and the exploit target suggest a malicious intent to compromise the user's system.

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
831fdb08b64c350f31430b6cc723c41605c730dad45e1a44b30ee287eaaa3af8
pdf-embedded-script PDF raw stream script payload at offset 0x384 12324 bytes