How can I delete a link under AWS domain that is damaging and legally questionable?

Hello.

As described in the document below, why not try contacting us using the abuse form?
https://repost.aws/knowledge-center/report-aws-abuse

Use the Report Amazon AWS abuse form to report suspected abuse of AWS resources.
The AWS Trust & Safety team can assist you when AWS resources are implicated in the following abuse types:

• Web content/non-copyright intellectual property that's objectionable content hosted on an AWS resource. The content might be a webpage, image, video, or some other form of internet content. Be sure to provide the URL of the content and a brief comment indicating why you believe the content to be abusive. If the content is a video, then also provide the timestamp in the video where the objectionable content can be located.
• Email abuse that's an abusive email sent from an AWS resource or spam content hosted on, or sent from an AWS resource. Be sure to provide the full email header and HTML body for investigation.
• Network activity that's originating from an AWS resource that causes problematic network traffic. This can be an intrusion attempt, denial-of-service (DoS) attack, port scanning, or any other abusive network activity. Be sure to provide the network logs showing the activity and the source and target IP addresses, ports, and timestamps.
• Copyright that's subject to content removal requests regarding the Digital Millennium Copyright Act.