What sort of scam is this?

On upwork I and others lately have been invited to several jobs.

A person in the chat would pretend to be an employer. He'd send me a pdf.
In it there's a link to google forms. On it there are questions designed to bullshit me such as "your hourly rate", "your name", "your upwork profile", "what frameworks you use", blah-blah-blah-blah.

And the last one is

""
Your ETH/Binance/Polygon wallet. Or multiple ones
We'll pay on it in the future.
And preferably the one which you've already used (there've been several TXs). Not a new one
""

What's the point in this? They'd get a wallet address, possibly the name of the owner. And so what?

Wallet address and all transactions, see if you are a big enough fish to be worth scamming?

Run.....

Possible victim profiling