The BTC is gone. Scam site. The only way you might identify the individual is law enforcement action against the domain registrar or web host information, which likely were also set up anonymously. The domain registrar is in Malaysia; aggressive reporting of the abuse to them may result in the domain register protection giving up the name or the registrar dropping the reg so that others aren't scammed.
Where did you find out about this "service"? It was only registered two months ago. The user popped into a few forums posting the link with broken English and disappeared.
https://www.bitcoinforum.com/bitcoin-exchange/bitcoin-exchange-service-httppaypal-btc-com/https://bitcointa.lk/threads/new-exchanger-www-paypal-btc-com.331598/(that's a rip of this site, the user
https://bitcointalk.org/index.php?action=profile;u=346576 posts were deleted from this forum). Forum mods may give up the IP to law enforcement but it also is likely anonymized.
Domain Name:paypal-btc.com
Registry Domain ID:
Registrar WHOIS Server: whois.webnic.cc
Registrar URL: webnic.cc
Updated Date:2014-06-21 18:03:06
Creation Date:2014-06-21 18:03:09
Registrar Registration Expiration Date:2015-06-21 10:03:08
Registrar:WEBCC
Registrar IANA ID:460
Registrar Abuse Contact Email:compliance_abuse@webnic.cc
Registrar Abuse Contact Phone:+603 8996 6799
Domain Status:Protected
Registry Registrant ID:
Registrant Name:Team CINIPAC WHOIS PROTECTION Team CINIPAC WHOIS PROTECTION
Registrant Organization:CINIPAC IBC
Registrant Street:Unit No C-6-25 Centrio, Pantai Hillpark No 1 Jalan Pantai Murni Pantai Hillpark
Registrant City:Kuala Lumpur
Registrant State/Province:Kuala Lumpur
Registrant Postal Code:59200
Registrant Country:my
Registrant Phone:+1.2024701095
Registrant Phone Ext:
Registrant Fax:+0.0
Registrant Fax Ext:
Registrant Email:abuse@cinipac.com
Registry Admin ID: