Same old... Same old...
This is just a tech based 21st century based twist on an old trick where innocent delivery/logistics companies get caught in the crossfire of a turf war or dirty tricks campaign.
I saw first hand examples where a local business with a busy forecourt had a series of denial of service attacks instigated by an assumed rival, who had ordered for the victim business on various occasions bulk deliveries by many different companies of timber, aggregate, ready mix concrete, skips or dumpsters, pizzas, wine, plants, and I forget what else. The world was more trusting at the backend of the last century, and ordering deliveries or services for cash on delivery wasn't an issue.
I was able to see on many occasions the chaos erupt from an office across the street as not only the forecourt but the street usually got blocked with every local merchants delivery lorry descending upon the address - and the poor business owner ending up shrugging their shoulders and commiserating with the delivery drivers, and occasionally the delivery drivers getting a bit fiesty with their local rivals as well. The office lost many hours gazing out of the window at the pantomime unfolding across the street. I think it was the skip/dumpster drivers that ended up with a fist fight and the police being called to clean up.
I am not sure whether they ever worked out who was really responsible, but it just goes to show that these Yandex whippersnappers are just replaying old tricks