Malicious PDF — malware analysis report

Static analysis result for SHA-256 718be5a60440aa5b…

MALICIOUS

PDF

75.8 KB
MD5: 1e1beabe180d6ff0d2b5139196543158 SHA-1: c560f252769e7db27e4a8c9e06b3d60e7d97fb03 SHA-256: 718be5a60440aa5b02f60256fd0c0a18e040d7d9c2805a40660e8c5e905017d2
168 Risk Score

Malware Insights

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

This PDF file exploits the CVE-2010-0188 vulnerability, which is a critical vulnerability in Adobe Reader's LibTIFF component. The embedded XFA script is designed to download and execute a second-stage payload, as indicated by the ML classifier and ClamAV detection. The script's obfuscated nature and the exploit's nature suggest a malicious intent to compromise the user's system.

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
c7f50490d94ddb5d60c6cb16892898efe66495b899ce34c1465a81d95d1ab6b0		 pdf-embedded-script PDF raw stream script payload at offset 0x286 76862 bytes

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