Weird Graphics / Overlay on lockscreen - Samsung Galaxy S5 active

[AC Question]

It has started since yesterday. Greeting changes with the time of day, such as:
"Goodmorning", "Good afternoon", "Goodnight".
Various types of graphics of stock images.

Will provide links to pictures.

 

[ManiacJoe]

What apps did you install in the last few days?

 

[bobbbyjones]

I am the original op, i downloaded no apps.