Malicious PDF — malware analysis report

Static analysis result for SHA-256 e59f556718449b0d…

MALICIOUS

PDF

16.4 KB
MD5: 6fcb0bd47529b8147b69b9a976bffde9 SHA-1: 5f5031666c2a691733acdfcd59a5a450fdb00097 SHA-256: e59f556718449b0ded583270ed4d0d7b4412f16dfcf5083f80e318854d485ce4
178 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1566.002 Spearphishing Attachment

The sample is a PDF file that leverages the CVE-2010-0188 exploit targeting Adobe Reader's XFA functionality. Static analysis detected embedded script content and a critical heuristic firing for this specific exploit. The ML classifier also strongly indicated maliciousness. The embedded script is likely responsible for executing the exploit 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
  • Embedded script payload in PDF stream medium 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.
  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic
  • 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
dd480d985135315b972fff30d99d92b72a08cd32d70853b053fa596ab58048ad
pdf-embedded-script PDF raw stream script payload at offset 0x359 16052 bytes