Is Modern Control Systems Solution Manual (12th Ed).pdf safe?
No antivirus engine detected a threat in this long-observed PDF, although its interactive form and automatic-action features warrant routine document precautions.
All 69 antivirus engines returned no malicious or suspicious detection, including 17 tier-1 engines. The PDF has been observed for many years without corroborating threat intelligence, though no sandbox run was completed and its automatic-action tag warrants opening it in an updated reader.
df287ca4296e7a3ffd…258698144884cdRecommended next actions
Before opening
Open it only when its sender or download source is one you independently trust.
If you already opened it
Keep normal device protection enabled and stop if the file behaves unexpectedly.
Intelligence
The saved assessment, checked against the scan evidence and recorded coverage.
The reasoning behind this verdict
This section explains the evidence supporting the verdict and keeps conflicting or missing signals visible.
All 69 antivirus engines returned no malicious or suspicious detection, including 17 tier-1 engines. The PDF has been observed for many years without corroborating threat intelligence, though no sandbox run was completed and its automatic-action tag warrants opening it in an updated reader.
The antivirus results show 0 of 69 engines flagging the file, with all 17 reporting tier-1 engines returning no detection. Its first submission dates to 2012, and it has appeared in 15 submissions from seven sources, providing a substantial observation window. MalwareBazaar, YARAify, and CIRCL supplied no corroborating threat information. The acroform and autoaction tags show that the PDF contains interactive features, but those features alone do not demonstrate exploitation. No sandbox execution or complete contacted-host reputation result is available, so runtime conduct cannot be assessed.
What We Detected
No malicious or suspicious result appeared among 69 antivirus engines. Seventeen tier-1 engines, including BitDefender, ESET-NOD32, Kaspersky, and Microsoft, reported no detection, and no malware family was identified.
Threat Behavior
The PDF carries acroform and autoaction tags, indicating interactive form content and an automatic document action. These capabilities can be used legitimately or abused, but there is no detection or external intelligence tying them to an exploit here. No completed sandbox observation is available, and contacted-host reputation was not checked or saved.
What To Do Now
Open the document only if its source and expected content are familiar. Use a fully updated PDF reader, keep endpoint protection enabled, and avoid approving unexpected prompts, external links, attachments, or active content.
Where this verdict could be wrong2 caveats
- file.tags includes autoaction and acroform, indicating interactive PDF features that can expand attack surface even though no engine detected a threat.
- behaviour=null and contactedHosts=null, so runtime effects and contacted-host reputation were not evaluated.
These are the assessment's weak points. If you believe one applies to your file, report the verdict and we'll re-review it.
- 0/69 engines reported a malicious or suspicious result.
- engines.tier1ReportedClean=17 and engines.tier1Malicious=0.
- The file has been observed for 5330 days.
- MalwareBazaar, CIRCL, and YARAify returned no hits.
- No malicious dropped child or brand mismatch is reported.
- Interactive PDF features are present through file.tags entries acroform and autoaction.
- No completed runtime observation is available because behaviour=null.
- No complete contacted-host reputation result is available because contactedHosts=null.
The document can be handled with normal caution in an updated PDF reader. Keep endpoint protection enabled and do not permit unexpected active content or follow unsolicited links.
Coverage & freshness
Complete means the check returned a usable result. It does not mean the file is safe.
Antivirus
Complete0 of 69 engines flagged the file.
Sandbox
PartialRuntime data is present, but no completed sandbox environment is recorded.
Network
Not runNo contacted-host reputation check is recorded.
No timestamp recordedYARA
CompleteRule evaluation completed with no recorded matches.
External intel
Complete3 of 3 independent reference sources completed.
Behavior
Plain-English impact first, then the observed runtime evidence.
Runtime behavior was not available
The report does not treat a missing runtime observation as a clean result.
Detection & Forensics
Consensus, attribution, signatures, code structure, prevalence, and identity.
Evidence integrity
Chain of custody for the facts preserved in this report.
- 0rule hits recorded
- 0 / 69engines flagged
- 7sources in submission history
Why these facts are shown
Each statement identifies whether it was directly recorded or derived from saved scan facts.
- 01
0 of 69 antivirus engines flagged the file.
Verdict inputView chapterProvenanceObservedSourceAntivirus analysisObserved at - 02
No completed runtime observation is available for this file.
ProvenanceDerivedSourceRuntime coverageObserved at - 03
The hash has been submitted 15 times from 7 sources.
ProvenanceDerivedSourceSaved report factsObserved at
Detection sources at a glance
The available sources did not agree on a named threat category.
MalwareBazaar, YARAify, and CIRCL hashlookup completed and returned no entries for this hash.
YARA rules
No matchesThe rule pass completed without a saved public match.
0 of 69 engines flagged this file
View all 69 engine results
PE structure
Not applicablePE structure analysis applies to Windows executable formats, not this file type.
How widely this file has been seen
Moderate prevalence — neither rare nor common. No strong prior applies.
Fingerprint and provenance
- File name
- Modern Control Systems Solution Manual (12th Ed).pdf
- Format
- Code signing
- Not applicable to this file type
- Size
- 5.3 MB
- Last analyzed
- Sep 9, 2026, 7:17 PM UTC
df287ca4296e7a3ffd7caccfdcb70cdbb525608cff431d543b258698144884cdSafety & FAQ
Complete recovery guidance and answers for the next decision.
What to do now
This file appears low risk based on the evidence available now.
- Recovery step 01
Open it only when its sender or download source is one you independently trust.
- Recovery step 02
A clean result reduces known risk, but it cannot guarantee that every new or targeted threat has been detected.
- Recovery step 03
Keep your antivirus and Windows updates switched on so you stay protected.
Safety FAQ
Direct answers grounded in the saved verdict and evidence in this report.
Is Modern Control Systems Solution Manual (12th Ed).pdf safe?
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Community
Member reviews and reports for this exact file hash.