Just received the following:
We have had no dealings with the company that allegedly sent the invoice and it appears that it is malware dressed up as a Dropbox download.
The message is also not directly from Dropbox and has been created by a email@example.com. Yandex.com is a eastern European and Russian based search engine and email client (this set my alarm bells off).
If you receive an email from dropbox or any FTP file transfer websites from an unknown user, don’t open them as they are most likely to be malware or ransomware.
It has been reported to Dropbox…if you also receive something similar search for the Dropbox reporting website to make a report rather than clicking on a link on any scam/malware/phishing email.