If youre looking for a really mild nitro reduction, I have this one to offer using CaCl2 and iron filings in ethanol/water
SYNLETT 2010, No. 20, pp 3019–3022 DOI: 10.1055/s-0030-1259067
I had reason to find extremely mild condition nitro-reductions to work around an aldehyde group (heck, one is just some quickly and dirtily prepared iron nanoparticles and water) and have more in this vein, though I think Pd/C will work if done judiciously.
Full disclose: I've used Pd/C once in my life, in undergrad lab to do transfer hydrogenation.