Kaspersky detects potential threats by identifying similar characteristics and behaviors, a common threat name for Android files is Trojan.AndroidOS.Agent.
These detections are targeted particularly on unwanted applications with similar characteristics and patterns, such as modified APKs and malicious files.
You may have encountered the Trojan.AndroidOS.Agent detection occurs during the scanning process of your files using VirusTotal. You can be confident that the mentioned threat name is usually a false positive that can occur during file scans.
There's absolutely no reason for concern. It has been discovered in a variety of files, even those that are usually considered harmless.
Antivirus threat detection in general
Antivirus software relies on comprehensive databases that store signatures and patterns for different types of harmful software, including viruses, malware, ransomware, trojans, adware, and other potentially dangerous programs that are commonly encountered.
Antivirus software often makes use of these datasets. Removing malware from a device involves conducting a thorough scan and comparing it with a comprehensive database of distinctive signatures or identifiers associated with malicious software. This helps to identify and eliminate any potential threats.
If an antivirus program detects a file or application on a user's computer that matches a signature in its database, it will quickly take action to remove the harmful file.
Similarly, a computer can be safeguarded by an antivirus tool that constantly monitors for potential threats using its vast database of threat signatures. VirusTotal scans files using over 70 antivirus engines to provide a thorough analysis.
The uploaded file is compared to the malware patterns stored in the databases of each engine to ensure its safety. Sometimes, antivirus programs can mistakenly flag a file as malware even though it's not, due to encountering a common pattern or signature.
At times, the antivirus engine may mistakenly flag valid files as malware, despite being deemed clean by other antivirus engines.
More about Trojan.AndroidOS.Agent malware
This specific threat is not intentionally harmful. On the contrary, it frequently causes false alarms and mistakenly flags certain files and apps on the device as possible threats.
If your phone has been affected by malware or if you've downloaded a modified APK from unreliable sources, it's likely that your system is infected and needs to have the malware removed.
If you want a simple solution to avoid false positives, consider scanning your device with Malwarebytes. This program is well-known for its strong malware protection and convenient mobile version.