Malicious PDF — malware analysis report

Static analysis result for SHA-256 027a5ba7cb27665e…

MALICIOUS

PDF

76.6 KB
MD5: 06ae54f76c0786b9a000861c3c08eeea SHA-1: 114d108a23d015b71bf299257920cb35b0b68d40 SHA-256: 027a5ba7cb27665eaff2d277fa70e7a70eb48bb423c3cc687f59ea1e68651673
168 Risk Score

Malware Insights

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

The file is a PDF that triggers a critical heuristic for CVE-2010-0188, an Adobe Reader exploit targeting LibTIFF XFA images. The embedded JavaScript, though heavily obfuscated, likely contains code to download and execute a second-stage payload. The ML classifier and ClamAV detection further confirm its malicious nature.

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://ns.adobe.com/xdp/
    • http://www.xfa.org/schema/xfa-template/2.5/
    • http://www.xfa.org/schema/xfa-data/1.0/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_pdf_script_00000286.bin
dce9e91a809e01a41027897c2e75747008816815db58e6da4d827475973e28e2
pdf-embedded-script PDF raw stream script payload at offset 0x286 77700 bytes