Is vnu.org a legit website?
Did you receive an email from someone with an address @vnu.org? Did you find some information or an offer on a website starting by http(s)://vnu.org?
Fraudulent: Unknown website
What does that mean?
This address is probably used by scammers.
This website is not working. It is highly probable that any email address associated with is is used for scam.
What should you do?
Do not trust it, and report it to the official organisation.