Juicy info:
http://www.paidesign.com/
http://www.paidesign.com/contact.php
http://www.paidesign.com/sendmail.php
http://www.paidesign.com/plugins/
http://www.paidesign.com/plugins/php-mail/
http://www.paidesign.com/securimage/

https://www.idontplaydarts.com/2011/05/exploit-phpcaptcha-securimage/

https://github.com/opsxcq/exploit-CVE-2016-10033
https://legalhackers.com/exploits/CVE-2016-10033/10045/10034/10074/PwnScriptum_RCE_exploit.py

https://www.exploit-db.com/exploits/40974
https://www.exploit-db.com/exploits/40969