As for the possibility of an encoded sequence- having studied encryption, I didn't get that impression. I work in IT and work with hash keys from time to time for a few different uses. No application that is used with photo taking, transferring, or modifying will create a hash key with that level of complexity. It just isn't needed. So, what else could possibly require a sequence that long? Something more universally used- like an email or webpage.
The file name is not random and matches an email from the WL HRC dump.
https://www.wikileaks.org/clinton-emails/emailid/63d961c72b558a8009823025001eebe46be8903b830cebca81dc7a27a7e4025c#searchresult
This is the SD document they are referencing- http://www.judicialwatch.org/wp-content/uploads/2018/01/JW-v-State-Abedin-Duplicate-Emails-00684-pg-71-75-5.pdf
As for the possibility of an encoded sequence- having studied encryption, I didn't get that impression. I work in IT and work with hash keys from time to time for a few different uses. No application that is used with photo taking, transferring, or modifying will create a hash key with that level of complexity. It just isn't needed. So, what else could possibly require a sequence that long? Something more universally used- like an email or webpage.