Hi, As Mary said the photos are a little too dark to make a confirmation. You may find it easier to get well lit photos outside if you do not have a well lit room inside. In addition we may be able to help you identify the fur better if you show front and back photos of the entire coat from above the collar to below the bottom hem. This will allow us to see the full pattern and pelt definition of the fur.
Edited to say; After looking at the photos again the pattern from what I can see looks most like Geoffroy's Cat. Those photos are pretty dark and grainy though and I would still need to see the additional photos requested to make a definitive confirmation. If it is Geoffroy's Cat it is included in CITES Appendix 1 on IUCN's Redlist, is protected across it's range, and trade is prohibited.