no this is not possible with hashcat
you assume that the hex hash representation is a number, thats not really the case, of course you could read it as number but thats just because you defined it that way
finding a "lower" hash will be relativ simple tough, just throw some random word at the hashalgo as every output starting with 0-9 or an "a" will be "lower" in your meaning, hex is 0-f so with 0-a you have 11 out of 16 possibilities to get a "lower" hash, in other words, statistically speaking around 70% of your given wordlist should result in a "lower" hash
depending on the algorithm you want to use, your goal can be easily achieved with a small piece of script (python or maybe even as simple as bash)
you assume that the hex hash representation is a number, thats not really the case, of course you could read it as number but thats just because you defined it that way
finding a "lower" hash will be relativ simple tough, just throw some random word at the hashalgo as every output starting with 0-9 or an "a" will be "lower" in your meaning, hex is 0-f so with 0-a you have 11 out of 16 possibilities to get a "lower" hash, in other words, statistically speaking around 70% of your given wordlist should result in a "lower" hash
depending on the algorithm you want to use, your goal can be easily achieved with a small piece of script (python or maybe even as simple as bash)