nginx config serve php and download pdf

nginx config

server {
    listen       <port> ssl;
    server_name <domain>;
    ssl_certificate /etc/ssl/certs/cert.crt;
    ssl_certificate_key /etc/ssl/private/cert.key;

    access_log  /home/<domain>/logs/<domain>.access.log  main;
    error_log  /home/<domain>/logs/<domain>.error.log  warn;

    root /home/<domain>/public_html;

    # download pdf only
    #
    location ~* /(.*\.pdf) {
        types { application/octet-stream .pdf; }
        default_type  application/octet-stream;
    }

    location / {
        try_files $uri $uri/ /index.php;
        index  index.php;
    }

    error_page  404              /404.html;
    location = /404.html {
        root   /usr/share/nginx/html;
    }

    # redirect server error pages to the static page /50x.html
    #
    error_page   500 502 503 504  /50x.html;
    location = /50x.html {
        root   /usr/share/nginx/html;
    }

    # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
    #
    location ~ \.php$ { 
        root           /home/<domain>/public_html;
        fastcgi_pass   127.0.0.1:9000;
        fastcgi_index  index.php;
        fastcgi_param  SCRIPT_FILENAME  /$document_root$fastcgi_script_name;
        include        fastcgi_params;
        fastcgi_read_timeout 10000;
    }

    # deny access to .htaccess files, if Apache's document root
    # concurs with nginx's one
    #
    location ~ /\.ht {
        deny  all;
    }
}