What is the sense of these websites with random content?

Sometimes, from Google results, I reach weird websites with random content under domains that don't make any sense.

Are they for SEO positioning? maybe from hacked servers?.

These are the last two:

http://devinebodyspa.architmotors.com/iw20pv/linux-mint-system-monitor-widget.html

http://mail.evohost.ch/8czkv5/hp-commercial-latex-360-wide-format-printer-model-b4h70a.html