If you are seeing a Russian woman and are keen on meeting her, it is always wiser for you to go visit them instead of inviting them to visit you.
This is likely to be a scan of a fake or fabricated visa.
Just when you think everything is going smoothly, there is a last minute problem and they will request you to urgently send them some money, without which it will be impossible for them to make their trip.
Her monthly salary is only a few hundred dollars, all Russian men are drunks and maybe her family died in a tragic accident or they are ill and in need of surgery.
Heart strings are pulled and victims are sucked in.
This is another common scam used by Russian scammers.