Once installed, the apps use innocuous names to ensure they don’t trigger suspicions. The mindset to download an app of unknown provenance for such a delicate purpose we won’t get into-the warnings here basically go without saying.
“Most ironically,” Sophos reports, one of the malicious apps is designed “to scrub your phone of private data.” You couldn’t make this up. As so often with adware apps, most are designed around trivial utilities-QR readers and image editors, for example.