The task pod (experiment) started reaching out to an IP associated with malicious activity. The IP was associated with 1000+ domain names. The activity was identified in AWS guard duty with a high severity level.

BoredHedgehog47 What is the pod container itself ?
EDIT:
Are you suggesting the default "ubuntu:18.04" is somehow contaminated ?
https://hub.docker.com/layers/library/ubuntu/18.04/images/sha256-d5c260797a173fe5852953656a15a9e58ba14c5306c175305b3a05e0303416db?context=explore