HTML Imageless QR Code Obfuscation Detection

This rule detects HTML content that is structured to resemble an imageless QR code, typically rendered using an HTML table. It looks for the presence of both black and white color definitions (hex codes #FFFFFF and #000000) in conjunction with HTML table tags (<table> or <td) and color styling attributes (background-color: or color:). This technique can be used for obfuscation or to embed data in a way that might bypass traditional image-based QR code detection.