Random files in home dir

I have random files appearing in my home folder /home/me folder. They look like this:

file:///home/wvb/index.html%3Fq=MjgwNDM3NjoyMDM1NTAwMjc6NjBjMzUwYTVhZWE1Y2FmMzIzMDExZjNmYWQwNzgyMTUzMmQwOGU0Yzc0NGFkMGY4MDNlNjJmZWI2ZmI5N2NkZg.5

Content just says OK. They keep on multiplying. Did a virus scan, and came back clean.

Any suggestion?

            .-/+oossssoo+/-. wvb@ThinkPad-E480
        `:+ssssssssssssssssss+:` -----------------
      -+ssssssssssssssssssyyssss+- OS: Ubuntu 20.04 LTS x86_64
    .ossssssssssssssssssdMMMNysssso. Host: 20KN005BZA ThinkPad E480
   /ssssssssssshdmmNNmmyNMMMMhssssss/ Kernel: 5.4.0-31-generic
  +ssssssssshmydMMMMMMMNddddyssssssss+ Uptime: 25 mins
 /sssssssshNMMMyhhyyyyhmNMMMNhssssssss/ Packages: 2707 (dpkg), 19 (flatpak), 10 (snap)
.ssssssssdMMMNhsssssssssshNMMMdssssssss. Shell: bash 5.0.16
+sssshhhyNMMNyssssssssssssyNMMMysssssss+ Resolution: 1920x1080
ossyNMMMNyMMhsssssssssssssshmmmhssssssso DE: Plasma
ossyNMMMNyMMhsssssssssssssshmmmhssssssso WM: KWin
+sssshhhyNMMNyssssssssssssyNMMMysssssss+ WM Theme: McMojave
.ssssssssdMMMNhsssssssssshNMMMdssssssss. Theme: Arc Dark [Plasma], Breeze-Dark [GTK2/3]
 /sssssssshNMMMyhhyyyyhdNMMMNhssssssss/ Icons: We10X [Plasma], We10X [GTK2/3]
  +sssssssssdmydMMMMMMMMddddyssssssss+ Terminal: konsole
   /ssssssssssshdmNNNNmyNMMMMhssssss/ CPU: Intel i7-8550U (8) @ 1.800GHz
    .ossssssssssssssssssdMMMNysssso. GPU: AMD ATI Radeon 540/540X/550/550X / RX 540X/550/550X
      -+sssssssssssssssssyyyssss+- GPU: Intel UHD Graphics 620
        `:+ssssssssssssssssss+:` Memory: 8483MiB / 15775MiB