Is it illegal to use a copy of another company's business license to recruit online?

This is definitely illegal. But because you are an individual, if you are a company legal person, the other party can sue your company, and you will face industrial and commercial punishment. The fine is generally 5000- 10000. But other companies will not sue you if they find out, especially if you are acting in your own name and you are not the legal representative of this company, so it is generally fine. You don't have to be too nervous.

It is safer to recruit in the name of individual industrial and commercial households or operate with a cancelled company license.