Balcklisted (and errors) :
https://sitecheck.sucuri.net/results/www.gdcdesarrollos.com

Multiple blacklistings :
http://urlquery.net/report.php?id=1498500150346

Blacklisted :
https://www.virustotal.com/en/url/5bf527e8c433da155769d7de33f8ea3de0fd75aa9e029b29c52cc0226a7c9235/analysis/1498502264/
https://www.virustotal.com/en/ip-address/104.28.12.203/information/

Wordpress issue :
Warning Directory Indexing Enabled

Vulnerable library used :
http://retire.insecurity.today/#!/scan/5e61db2cf0fa483c346e946653e0866e8731bf0b52fe1da78fcbe413478541fe