Dynamic formular html site with email function to pdf

Hello, i need an html site where the user has to fill in a dynamic formular. After filling in all the formular fileds the user has to be the possibility to upload one ore more attachements (pdf,jpg), to mark some checkboxes and finally after submitting the formular it would be sent as an pdf file attached in an email to a specific adress. Design and creating the site with high security standard is your job. The text fields and specific requirements would be given by me.