I am not able to reproduce. The page, valor.com.br, displays without redirecting to a Flash Player page.
What is the exact, complete, URL for the page you are being redirected to?
Definitely not an Adobe site and most likely malicious. Some possibilities (not a complete list):
- malicious ad on the site (that I didn't get)
- your system (computer, modem, router) has been compromised in some other fashion
- proxy server settings modified without your knowledge
- DNS server redirect
- something else
I recommend running a full system scan (rootkit, virus, trojan, malware, adware, etc) on your system.
Thank you for the update. I tried with Safari, Firefox, Opera, and Chrome and none redirected.