301 redirect pdf files to my new site

I have a folder on my site that contains bunch of pdf files. Is there a way to redirect any one trying to access these files to my new site?

for example if a user tries to access http://www.example.com/pdf/file.pdf he gets redirected http://example2.com.

I’ve managed to redirect normal posts using a wordpress 301 redirect plugin, however this is not working with pdf files.

I tried some htaccess rewrite i found on google but it broke the site.

Thanks.

Is there a way to redirect