Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c3b43dc89324ecb…

MALICIOUS

PDF

16.3 KB
MD5: aed2e01b5ddd7f3b422292dd84d6c97e SHA-1: 16a8a0181baed09a1405100664d193dd5d0b0daa SHA-256: 5c3b43dc89324ecb71bb8a50cbabf2f74d3b324a6d87bc78374460a3ab83109a
168 Risk Score

Malware Insights

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

The sample is a PDF file that triggers a critical heuristic for CVE-2010-0188, an Adobe Reader exploit targeting LibTIFF XFA images. An embedded JavaScript payload was also detected, which likely contributes to the exploitation process. The ML classifier and ClamAV also flagged this file as malicious, indicating a high likelihood of exploit 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_00000359.bin
59fc57a545f46c5baf937c67f4666d980e1683060be3abda034feef5d3eb0c7c
pdf-embedded-script PDF raw stream script payload at offset 0x359 15928 bytes