Malicious PDF — malware analysis report

Static analysis result for SHA-256 0afa59b457b8a105…

MALICIOUS

PDF

16.2 KB
MD5: 958edfc7df02007ea40469e5db746c05 SHA-1: 1e61323b9ea8e814c0e98de189bea6fe6b7e7e02 SHA-256: 0afa59b457b8a10538d5ddda40063496aaa4e3c7ff1a0d570ce972f7fef1dde2
168 Risk Score

Malware Insights

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

The file is a PDF that triggers the CVE-2010-0188 exploit, which is known to be used for client-side code execution. The embedded script contains obfuscated JavaScript, which is likely responsible for downloading and executing 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
19cc6c0726f00ca1bb89ef3396b0df4eceb80105e5143c13c164c6f2bdce5a30
pdf-embedded-script PDF raw stream script payload at offset 0x359 15901 bytes