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Did you add it in the Google Webmaster Tools?

(Just in case, how to add: http://support.google.com/webmasters/bin/answer.py?hl=en&answer=1352276)

Why are you trying to optimize a page using a PDF content?

Hi Juan,

Google can index PDFs, but there are some exceptions:

• Google cannot index encrypted or password protected files;
• Or images in PDF document.

http://support.google.com/webmasters/bin/answer.py?hl=en&answer=35287

I would be nice if you will have a friendly URLs.

You can use a rewrite rule to remove extensions. Try this: http://stackoverflow.com/questions/9489315/htaccess-rewrite-rule-to-remove-extensions