MALICIOUS
234
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file contains numerous links to external PDF files, suggesting a link farm designed to distribute malware. The presence of a 'download button' lure and instructions for a password-protected archive further indicate a malicious intent to trick users into downloading and opening malicious content. The ClamAV detection and ML classifier strongly support its malicious nature.
Machine Learning
- Nyx PDF Classifier malicious score 0.9982
Heuristics 8
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Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARMSmall PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LUREDocument gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
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Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARMSmall PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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External URI info PDF_URIPDF contains an external URL action
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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Embedded URL info EMBEDDED_URLOne or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.URL https://vilenefex.ru/strik?utm_term=dell+optiplex+9020+wifi+drivers+windows+7+64+bit
- http://vivebax.iblogger.org/sobre_el_anarquismo.pdf
- https://cdn-cms.f-static.net/uploads/4409806/normal_60292f9aee3b5.pdf
- http://nuwiratuzitezep.22web.org/losepobemowigez.pdf
- https://wimegipovuxu.weebly.com/uploads/1/3/4/3/134373819/zebuxesevegojub_nexegof_pemimugumivox.pdf
- https://cdn-cms.f-static.net/uploads/4447267/normal_604d1fbc742a1.pdf
- http://bukawavado.medianewsonline.com/ralepokoxexokedaga.pdf
- https://nawolokiwepona.weebly.com/uploads/1/3/2/8/132814855/34e93a78fb1af08.pdf
- https://static.s123-cdn-static.com/uploads/4459034/normal_5fc9403c52f65.pdf
- https://sebanibukuj.weebly.com/uploads/1/3/4/3/134354661/tetadi.pdf
- https://pitulero.weebly.com/uploads/1/3/2/6/132683003/f84525db14f401.pdf
- https://bogonifad.weebly.com/uploads/1/3/4/1/134108647/vetugepawu_judevol_rikumelezula.pdf
- https://cdn-cms.f-static.net/uploads/4380522/normal_60342bf2612dd.pdf
- http://wegaturagifo.getenjoyment.net/autocad_2d_tutorial_2020.pdf
- http://zeboxagekej.sportsontheweb.net/18690247836.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://67258aaf-84c5-4a88-bfd2-1aa7ddb6c27a.filesusr.com/ugd/850f07_896961eaa59e4567af6a41faf0cd7bb8.pdf?index=true
- http://lirolisol.epizy.com/ditanewevosobevikivatixuw.pdf
- https://s3.amazonaws.com/zumomasugipeno/vumoleruxuzube.pdf
- https://s3.amazonaws.com/kewakuko/nejakideme.pdf
- https://s3.amazonaws.com/panalipolifod/chinese_dragon_vector_free.pdf
- https://667b589a-70dd-4c78-a03f-47f6e9f07b1f.filesusr.com/ugd/db80c5_b658ecbadb6b4ff4bb47bf793231846d.pdf?index=true
- http://jupegojut.atwebpages.com/10137312945.pdf
- https://s3.amazonaws.com/dapekufoxiraku/how_to_replace_craftsman_garage_door_opener_belt.pdf
- https://951e66c5-660f-4748-bfcc-a6cc0831133d.filesusr.com/ugd/4967bb_ad82e714155d4da8a3677e9b35a685df.pdf?index=true
- http://gutuneze.rf.gd/gosup.pdf
- https://cd29ef07-728f-4a0b-b57b-23e770395c36.filesusr.com/ugd/f14cf6_e1b46a0f9d8246769a12c68a272dfbf7.pdf?index=true
- http://xejonitofopim.epizy.com/bhaktamar_stotra_lyrics_free.pdf
- https://s3.amazonaws.com/tedowafomaru/87883883503.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://scripts.sil.org/OFL
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0001b154.bin6249f72e6ef9261697d998b507d842eae581b03bd390022f149e79fd7bcdc0cb |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1B154 | 5936 bytes |
font_01_sfnt_off0001c5bd.binbc10695dc8ccd53a2f9465085c020c188ad909da0767e22a039325a9a1ca6ef8 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1C5BD | 11248 bytes |
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