Given that imgsrc.ru hosts user-generated content, this specific string was probably an image filename stored on that domain or referenced in a forum/blog post relating to — potentially a photo series from December 2020.
The December 11, 2020 edition of Boys 005, with the image file img_20201211_061409_566 , offers a fascinating look into the world of lifestyle and entertainment. This particular issue features a collection of images that capture the essence of modern youth culture. boys 005 img 20201211 061409 566 imgsrcru hot