Malicious PDF — malware analysis report

Static analysis result for SHA-256 1771ea8df9a32f80…

MALICIOUS

PDF

16.1 KB
MD5: e88becb8c24253b584c171adecfd666b SHA-1: bf21f0608c6b178f6276760e0b3ff0742e660371 SHA-256: 1771ea8df9a32f805793e8431c416ab22070c853ef93202ca6059b60679fcbcf
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 designed to exploit the CVE-2010-0188 vulnerability in Adobe Reader. This exploit is intended to execute a malicious payload, likely a second-stage downloader or shellcode, directly on the victim's system. The embedded script is heavily obfuscated, but its presence and the critical heuristic firings strongly indicate an exploit attempt.

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_00000354.bin
6bb554ea330ad7687af94b32aeca1cab9e07baab195e7d2b33d968e87c8abd4f
pdf-embedded-script PDF raw stream script payload at offset 0x354 15752 bytes