If your filing cabinet is made up of metal, there is far lesser risk involved, mainly because the only problem it could have is either being bent out of shape at certain areas or having scrapped paint. There are wooden filing cabinets but aren’t as common as metal ones.
When buying used desks however, you may want to consider inspecting it thoroughly and check if there are any cracks, chips, discoloration and other problems which are out of the ordinary.
Back to the filing cabinets, metal filing cabinets are not a major risk but getting ones which have no obvious scrapped paint or are bent out of shape in certain places with working locks are the ones you want to purchase.
If you’re looking for such furniture, you may want to consider going to your local used product market and trying to score these cheap. Getting these used is definitely the best idea because there is pretty much no difference between buying new and used when it comes to such items.