Is basic-electrical-engineering-d-p-kothari-and-i-j-nagrath.pdf safe?
No antivirus engine detected the PDF, and the completed sandbox run found no malicious activity, dropped payloads, or network contacts.
All 75 antivirus engines produced no detection, including 17 high-trust engines reporting clean results. One completed sandbox run found no malicious activity or network contacts, while curated threat sources supplied no corroborating hits; however, the document is newly observed and has limited reputation history.
c1bbd7756deea3f68c…066a93e53515edRecommended 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 75 antivirus engines produced no detection, including 17 high-trust engines reporting clean results. One completed sandbox run found no malicious activity or network contacts, while curated threat sources supplied no corroborating hits; however, the document is newly observed and has limited reputation history.
The strongest evidence is complete detection silence across 75 antivirus engines, with 17 high-trust engines reporting clean results. A completed sandbox run recorded no MITRE techniques, processes, dropped files, persistence, or network contacts. Curated threat intelligence also returned no matching malware entry or YARA rule. Five previous PDF decisions were clean, although file-type-only similarity is weak supporting context. The document is newly observed and a separate host-reputation cross-check is unavailable, but neither limitation outweighs the consistent scan and runtime evidence.
What We Detected
None of the 75 antivirus engines flagged this PDF, and 17 high-trust engines reported clean results. No malware family label, suspicious classification, YARA rule, or curated threat-intelligence match was associated with the file.
Threat Behavior
One completed sandbox run recorded no MITRE techniques, launched processes, written files, persistence indicators, dropped payloads, or network contacts. No separately saved host-reputation cross-check is available, but there were no observed hosts requiring evaluation in that run.
What To Do Now
The evidence supports opening the document with an updated PDF reader while keeping endpoint protection enabled. Because the file is newly observed, confirm that it came from the expected source and avoid enabling embedded content or following unexpected links.
Where this verdict could be wrong3 caveats
- The file is newly observed with only one submission, so it has little established reputation.
- contactedHosts=null means no separately saved host-reputation cross-check is available, although the sandbox recorded no contacted domains, IPs, or URLs.
- The five prior safe samples match only by file type, which is weak similarity and cannot establish that this exact PDF shares their contents.
These are the assessment's weak points. If you believe one applies to your file, report the verdict and we'll re-review it.
- 0/75 antivirus engines detected the file
- 17 high-trust engines reported clean results
- Completed sandbox run produced no malicious verdict
- No dropped files, persistence indicators, or observed network contacts
- No CIRCL, MalwareBazaar, or YARAify hit
- Newly observed file with only 1 submitter and 1 submission
- No complete, separately saved contacted-host reputation result
- No exact-hash or strong structural similarity corroboration
Open only if the document came from an expected source, using an updated PDF reader with endpoint protection enabled. Re-scan it if its behavior changes or later intelligence produces detections.
Coverage & freshness
Complete means the check returned a usable result. It does not mean the file is safe.
Antivirus
Complete0 of 75 engines flagged the file.
Sandbox
Complete1 isolated runtime environment contributed observations.
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 flight recorder
Capture complete- 1isolated sandbox run
- 0MITRE ATT&CK techniques
- 0spawned processes
- 0network contacts
- 0filesystem & mutex artifacts
What this file did when executed
This file was detonated in 1 sandbox and its runtime behaviour was observed.
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 / 75engines flagged
- 1sources 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 75 antivirus engines flagged the file.
Verdict inputView chapterProvenanceObservedSourceAntivirus analysisObserved at - 02
The hash has been submitted 1 time from 1 source.
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 75 engines flagged this file
View all 75 engine results
PE structure
Not applicablePE structure analysis applies to Windows executable formats, not this file type.
How widely this file has been seen
Barely seen in the wild and first surfaced recently. That limits reputation evidence, but rarity alone is not proof of malware.
Fingerprint and provenance
- File name
- basic-electrical-engineering-d-p-kothari-and-i-j-nagrath.pdf
- Format
- Code signing
- Not applicable to this file type
- Size
- 1.2 MB
- Last analyzed
- Sep 26, 2026, 4:01 PM UTC
c1bbd7756deea3f68c040e81fdd7ed4b3aa3fc08b56e10e6ed066a93e53515edSafety & 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 this file safe?
What is this file?
How many antivirus engines detected this file?
What is the SHA-256 hash of this file?
Is it safe to open this file?
How up to date is this analysis of this file?
Community
Member reviews and reports for this exact file hash.