Malicious PDF — malware analysis report

Static analysis result for SHA-256 1877305accd348fa…

MALICIOUS

PDF

101.8 KB
MD5: d4d7fd1ee20aede00a281ec7ab22ea0e SHA-1: aa99cc2b258ed0a712e7d4306e5ca48de67be2d2 SHA-256: 1877305accd348fa036273eda53810d07839ceb2e21458b0b9f074c75cb3ab54
168 Risk Score

Malware Insights

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

The sample is a PDF file that contains embedded XFA (XML Forms Architecture) data. Heuristics indicate a critical vulnerability exploit (CVE-2010-0188) targeting Adobe Reader's LibTIFF component. The embedded script, identified as JavaScript, is likely responsible for executing the exploit payload. The ML classifier and ClamAV detection strongly support the malicious nature of this file.

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
68980121bcc6eee793151a259403e4dba734d6ddecc13a4d6591813e25ce295c
pdf-embedded-script PDF raw stream script payload at offset 0x346 103466 bytes