Hashcat not cracking PDF hash

[DrDinosaur]

I'm trying to crack a PDF file (version 1.6). Here are the contents of hash.txt: <redacted>

Hashcat says it cracked the hash, but there is no password.

PS C:\Users\Dr Dinosaur\Documents\Security\Hashcat> .\cudaHashcat64.exe -m 10500 -o cracked.txt hash.txt "C:\Users\Dr Dinosaur\Documents\The-Distribution-Which-Does-Not-Handle-OpenCL-Well (Kali) Linux Share\Wordlist.lst"
cudaHashcat v1.35 starting...

Device #1: GeForce GT 630M, 1024MB, 950Mhz, 2MCU

Hashes: 1 hashes; 1 unique digests, 1 unique salts
Bitmaps: 8 bits, 256 entries, 0x000000ff mask, 1024 bytes, 0/1 rotates
Rules: 1
Applicable Optimizers:
* Zero-Byte
* Not-Iterated
* Single-Hash
* Single-Salt
Watchdog: Temperature abort trigger set to 90c
Watchdog: Temperature retain trigger set to 80c
Device #1: Kernel C:\Users\Dr Dinosaur\Documents\Security\Hashcat/kernels/4318/m10500.sm_21.64.ptx
Device #1: Kernel C:\Users\Dr Dinosaur\Documents\Security\Hashcat/kernels/4318/amp_a0_v1.64.ptx

INFO: removed 1 hash found in pot file


Session.Name...: cudaHashcat
Status.........: Cracked
Input.Mode.....: File (C:\Users\Dr Dinosaur\Documents\The-Distribution-Which-Does-Not-Handle-OpenCL-Well (Kali) Linux Share\Wordlist.lst)
Hash.Target....: <redacted>
Hash.Type......: PDF 1.4 - 1.6 (Acrobat 5 - 8)
Time.Started...: 0 secs
Speed.GPU.#1...: 0 H/s
Recovered......: 1/1 (100.00%) Digests, 1/1 (100.00%) Salts
Progress.......: 0/0 (100.00%)
Skipped........: 0/0 (100.00%)
Rejected.......: 0/0 (100.00%)
Restore point..: 0/0 (100.00%)
HWMon.GPU.#1...: 0% Util, 58c Temp, N/A Fan