Malicious PDF — malware analysis report

Static analysis result for SHA-256 058326de4a364f13…

MALICIOUS

PDF

79.5 KB
MD5: 4ef9d17cd7061d7b268c839295424207 SHA-1: 3ca1348358473b2ee67c841f3e2aeedb318a6aa5 SHA-256: 058326de4a364f13eaa12b041747bf845704bad5514dd10ef8499ad0bb30d3cb
168 Risk Score

Malware Insights

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

The file is a PDF that contains an embedded XFA form, which is known to be a vector for exploiting Adobe Reader vulnerabilities. Heuristics and ClamAV detection confirm this, specifically pointing to CVE-2010-0188. The embedded JavaScript attempts to deobfuscate and execute a payload, likely to download and run a second-stage exploit or malware.

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_00000288.bin
f1e0f481a004901cbeb519dae4b85d43474203cc01940a04798a8bd9c60bed17		 pdf-embedded-script PDF raw stream script payload at offset 0x288 80633 bytes

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