Yes, you can post malware reatled info and it's prevention techniques. I don't think that is a problem and It could be helpful too. Just don't create one to harm something around and post it here.
As long as your post doesn't harm anyone or contains anything nonsense, It is okay. I also think that your chosen topic is helpful especially for bitcoin users who always encounters links that might have malware behind it. Well, people still need to hear some enlightenment and be educated about this topic since this modus isn't new and is very common, too common that you won't recognize it easily. So yes, Go for it. I can see that your aim is too help and knew that it will be helpful.