Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a655cf16ed388af…

MALICIOUS

PDF

73.4 KB
MD5: b458106c5472fee4240ca7d1d1fa1138 SHA-1: 31b7f5fc0cf40a3e34c033270c84b25122aeb63d SHA-256: 6a655cf16ed388af2fe1c1aec54bd49f0e9abacebaf6934dc474035a230924d5
168 Risk Score

Malware Insights

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

The file is a PDF document that leverages the CVE-2010-0188 vulnerability, specifically targeting Adobe Reader's LibTIFF component. An embedded XFA form and script payload were detected, indicating an attempt to execute arbitrary code. The embedded JavaScript, though obfuscated, likely contributes to the exploitation process by preparing or delivering the malicious payload.

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_0000034e.bin
981c2da192bff3417580c6878144c2b3c14102661a5618e4958b38520776cc47
pdf-embedded-script PDF raw stream script payload at offset 0x34E 74422 bytes