Malicious PDF — malware analysis report

Static analysis result for SHA-256 10b8a2d42fc26981…

MALICIOUS

PDF

16.0 KB
MD5: adda7e7488d6ba804ef9dab97752b630 SHA-1: 667e07954ac96acc9c6c531308ff0461d03ff1f7 SHA-256: 10b8a2d42fc269810991a17fb49df260285f5963878dec81c601495e07afa346
168 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The PDF file contains embedded JavaScript that leverages the CVE-2010-0188 vulnerability in Adobe Reader's LibTIFF component. This exploit is designed to execute a malicious payload, as indicated by the critical heuristic firings and the ML classifier's high confidence score. The embedded script, though truncated, appears to be part of the exploit mechanism.

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
55e01f53c2e16ba79eb72dc7e505c762c5d421b1acf6a9fb2b33d45688e03335
pdf-embedded-script PDF raw stream script payload at offset 0x34E 15701 bytes