Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b1bc1bd4f79daab…

MALICIOUS

PDF

101.9 KB
MD5: 247c3a20abf6cf44e6b91f3bc22bca03 SHA-1: b0ffd5cee420c75a3dee8e83ac88bbc3297df885 SHA-256: 0b1bc1bd4f79daaba43e87a827ae4fec8f51344d9294ce32f078906f2604cb62
168 Risk Score

Malware Insights

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

The sample is a PDF file identified as malicious by multiple heuristics, including a critical detection for CVE-2010-0188, an Adobe Reader LibTIFF XFA image exploit. It also contains embedded JavaScript within an XFA form, which is likely responsible for triggering the exploit and executing a second-stage payload. The embedded script content, though truncated, suggests JavaScript execution.

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
77e823a8bfb47a8b1d0fd61dc932dd6ce4c99b6bfbe1ae981948c0ff73fa0d0c
pdf-embedded-script PDF raw stream script payload at offset 0x346 103651 bytes