A good candidate could be Benford's law [1], which makes predictions about the distribution of digits. If the digits of the numbers found in the results section of the paper deviate too much from this law, it could be a red flag. [1] https://en.wikipedia.org/wiki/Benford%27s_law
And to be honest, once it was known to be used in this way, it would be simple to make fake data comply with the law.