Agreed. They will buy it from you and will sell it OTC with lots of profits. There are lots of telegram groups selling those IDs to anyone who wants to participate ICOs. And that is a best-case scenario. I don't want to think the worse one...
The worst one is they will use your documents and identity in illegal activity. Ran an ICO using your name, Ran a HYIP/Ponzi using your ID to verify payment processor account. Identity theft is the worst case that can happen and you will wish it will never happens to you