The following info was extracted from my web server, like I already did before for the RE4B book. It's for the year 2023.
$ cat *smt*/access*2023* | grep pdf | cut -f 1 -d ' ' | sort | uniq | xargs -L 1 geoiplookup | sort | uniq -c | sort -r -n | grep -v "can't resolve hostname"
3361 GeoIP Country Edition: US, United States
1364 GeoIP Country Edition: RU, Russian Federation
873 GeoIP Country Edition: SG, Singapore
559 GeoIP Country Edition: CN, China
538 GeoIP Country Edition: DE, Germany
420 GeoIP Country Edition: GB, United Kingdom
302 GeoIP Country Edition: FR, France
286 GeoIP Country Edition: CA, Canada
270 GeoIP Country Edition: NL, Netherlands
266 GeoIP Country Edition: IN, India
198 GeoIP Country Edition: IT, Italy
194 GeoIP Country Edition: AT, Austria
191 GeoIP Country Edition: JP, Japan
184 GeoIP Country Edition: AU, Australia
167 GeoIP Country Edition: VN, Vietnam
131 GeoIP Country Edition: CZ, Czech Republic
127 GeoIP Country Edition: ES, Spain
126 GeoIP Country Edition: UA, Ukraine
122 GeoIP Country Edition: HK, Hong Kong
121 GeoIP Country Edition: KR, Korea, Republic of
113 GeoIP Country Edition: FI, Finland
111 GeoIP Country Edition: PL, Poland
109 GeoIP Country Edition: SE, Sweden
100 GeoIP Country Edition: IE, Ireland
96 GeoIP Country Edition: IL, Israel
...
Full list: 130 countries/territories.
Again, a strange bias towards Singapore. Maybe it's their IPv4 allocation policy.
Subscribe to my news feed, my Discord server/channels.
Yes, I know about these lousy Disqus ads. Please use adblocker. I would consider to subscribe to 'pro' version of Disqus if the signal/noise ratio in comments would be good enough.