Best way to translate paper? Services for hire?
Find a student who is fluent in russian and pay them? I've translated (relevant parts of) german arcticles for my US colleagues before, in that case actually for free but I'm pretty sure students are happy to help and will help in this case for small compensation.

It would also be easier, since you can sit down together and go through the text, since there might be difficulties with translating correctly without fully understanding the topic.

In addition, Adobe Acrobat Pro is able to extract the text of this pdf quite well since it's in very nice quality.