From kaspersky.co.uk
In early April, Kaspersky experts discovered a mass e-mailing campaign sending messages with a malicious PDF attached. The attackers are taking aim at companies: a dangerous document is attached to business correspondence (we saw e-mails written in English, German, Italian and French). The objective of the campaign is to infect victims’ computers with the QBot malware, also known as QakBot, QuackBot, or Pinkslipbot. Interestingly, about a year ago our specialists observed a similar sudden increase in the flow of e-mails delivering malware (including QBot).