.htaccess redirect *.pdf to /newdir/*pdf

[mameha]

I want to redirect all requests for .pdf files from one dir to another.

OLD DIR:  www.domain.com/en/product/pdf/
NEW DIR: www.domain.com/global_pdf/

...so when someone requests:
www.domain.com/en/product/pdf/john.pdf

it loads:
www.domain.com/global_pdf/john.pdf

I think I need to use RedirectMatch or RedirectRule  to check for *.pdf but I have no idea how to write the expression matching thing.

Can anyone help with this?

[ToonMariner]

IF all your pdfs are in one directory then this should work

RewriteRule \/(!?\/)*+\.pdf$ global_pdf/$1.pdf [NC,L]