false positive?

Viruses and worms
1

Today avast started to show this message on some sites. Is there something to worry about?

2

URL:Mal means URL or IP is blacklisted for whatever reason

https://www.virustotal.com/nb/url/0d53bd84cb432015822bde31a7073cc5a0bdedc1ef4e7a3ccf838e0d915265f1/analysis/1448307879/

IP history https://www.virustotal.com/nb/ip-address/23.218.156.42/information/