The answer is to execute the file in a sandboxed environment and monitor system calls. This is the best approach because dynamic malware analysis requires actually running the suspicious code to observe its real-time behavior, such as file modifications, registry changes, and network connections, which a sandbox safely contains. On the Certified Ethical Hacker CEH exam, this question tests your ability to distinguish between static and dynamic analysis methods—a common trap is confusing VirusTotal submissions or disassembly (both static) with live execution. Remember, static analysis looks at the binary without running it, while dynamic analysis reveals the malware’s true actions. A useful memory tip: “Static is still, dynamic is doing”—if you need to see what the malware does, you must let it run in a sandbox.
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.
A security analyst detects a file named 'invoice.pdf.exe' in an email attachment. When the file is submitted to VirusTotal, multiple engines detect it as a Trojan. The analyst wants to perform dynamic analysis to observe its behavior. Which approach is BEST?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "best"
Why it matters: Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Execute the file in a sandboxed environment and monitor system calls
Dynamic analysis involves executing the malware in a controlled environment (sandbox) and monitoring its actions. Static analysis (strings, PEiD) examines the binary without execution. Submitting to VirusTotal is static, and disassembly is also static.
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.
✗
Disassemble the file using IDA Pro to understand its code
Why it's wrong here
Disassembly is a form of static analysis.
✗
Run 'strings' on the file and analyze the output
Why it's wrong here
This is static analysis, not dynamic.
✓
Execute the file in a sandboxed environment and monitor system calls
Why this is correct
Dynamic analysis involves executing the malware and observing its behavior in a sandbox.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Submit the file again to VirusTotal for a second opinion
Why it's wrong here
This is still static analysis and does not reveal runtime behavior.
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: Execute the file in a sandboxed environment and monitor system calls — Dynamic analysis involves executing the malware in a controlled environment (sandbox) and monitoring its actions. Static analysis (strings, PEiD) examines the binary without execution. Submitting to VirusTotal is static, and disassembly is also static.
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.
Are there clue words in this question I should notice?
Yes — watch for: "best". Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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This CEH practice question is part of Courseiva's free EC-Council certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the CEH exam.
Question Discussion
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