The correct answer is that the file is likely malicious and requires further analysis. This conclusion stems from the technical concept of a low detection rate on VirusTotal, which often indicates a zero-day threat, heavily obfuscated malware, or a newly emerging variant not yet widely recognized by signature-based engines. The fact that a previous submission had zero detections and now three engines flag it suggests the file is evolving or being actively tested against defenses, reinforcing the need for deeper investigation. On the Certified Ethical Hacker CEH exam, this scenario tests your ability to interpret ambiguous threat intelligence data without falling into the trap of assuming safety based on low counts—a common mistake where candidates dismiss a file as clean. Remember the memory tip: “Low count doesn’t mean all clear; treat three hits as a call to dig deeper.”
CEH Practice Question: Malware, Social Engineering and Network Attacks
This CEH practice question tests your understanding of malware, social engineering and network attacks. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
An analyst is analyzing a suspicious file using VirusTotal and observes that only 3 out of 60 antivirus engines detect it as malicious. The file has been submitted before but with no detections. What should the analyst conclude?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The file is likely malicious and requires further analysis
Low detection rate suggests the file may be a zero-day or heavily obfuscated. The fact that previous submission had no detections and now some detect indicates it might be a new variant or the file is not widely known. The best action is to treat as potentially malicious and perform dynamic analysis.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
The file is a clean file with a rare hash
Why it's wrong here
Rarity of detection is a red flag, not an indicator of cleanliness.
✗
The file is safe because most engines don't detect it
Why it's wrong here
Low detection rate does not guarantee safety; it could be a new or evasive malware.
✗
The file is likely a false positive
Why it's wrong here
False positives are possible but not likely with only 3 out of 60.
✓
The file is likely malicious and requires further analysis
Why this is correct
Low detection rate suggests it may be new malware; further analysis is warranted.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A practitioner preparing for the CEH exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this CEH question in full detail.
Identify which CEH exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Malware, Social Engineering and Network Attacks — This question tests Malware, Social Engineering and Network Attacks — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The file is likely malicious and requires further analysis — Low detection rate suggests the file may be a zero-day or heavily obfuscated. The fact that previous submission had no detections and now some detect indicates it might be a new variant or the file is not widely known. The best action is to treat as potentially malicious and perform dynamic analysis.
What should I do if I get this CEH question wrong?
Identify which CEH exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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