MALICIOUS
146
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF document contains numerous embedded URLs and heuristics indicate it is a link farm designed to lure users to external sites. Specifically, the 'SE_BROWSER_INSTALL_LURE' and 'SE_PASSWORD_ARCHIVE_LURE' heuristics suggest the document's purpose is to trick users into installing malicious software or revealing passwords. The ML classifier also strongly flagged this PDF as malicious.
Machine Learning
- Nyx PDF Classifier malicious score 0.9947
Heuristics 6
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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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Browser extension / update installation lure high SE_BROWSER_INSTALL_LUREDocument tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
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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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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://chcial.ru/uplcv?utm_term=how+to+block+sites+in+mobile+chrome PDF link annotation
- http://tootingtaxi.com/survey/userfiles/files/5182691074.pdfIn PDF document text
- http://crosswaysrecruitment.com/userfiles/file/91010590072.pdfIn PDF document text
- http://imailbox.nl/images/uploadedimages/file/49877204363.pdfIn PDF document text
- http://www.iuoelocal870.com/kaizen/ckfinder/userfiles/files/4902064346.pdfIn PDF document text
- http://parkergeneralcontractors.net/userfiles/file/xakevanaromojal.pdfIn PDF document text
- https://elegune.net/files/galeria/files/65809013023.pdfIn PDF document text
- https://guclupin.com/calisma2/files/uploads/53228301142.pdfIn PDF document text
- http://keifo.ru/ckfinder/userfiles/files/komaraduro.pdfIn PDF document text
- https://beaszemin.com/files/lunexipi.pdfIn PDF document text
- https://www.shipgo17.com/plugin/ckeditor/ckfinder/userfiles/files/407593954.pdfIn PDF document text
- https://r4binsh4h9-att.com/contents/files/letanudelebiboselajimupaj.pdfIn PDF document text
- http://kozelsk-adm.ru/files/uploads/files/gegolupubabu.pdfIn PDF document text
- http://cjmfgx.morefriendship.com/upload/files/21544329482.pdfIn PDF document text
- https://invest.pl/userfiles/file/movudol.pdfIn PDF document text
- https://taumed.kz/upload/2021/09files/210924044943914476brtwc.pdfIn PDF document text
- http://www.garriagricola.com/wp-content/plugins/formcraft/file-upload/server/content/files/16147ef380d7b8---42606694628.pdfIn PDF document text
- http://abw10thstreetne.com/uploads/files/liludososewoxaradozufox.pdfIn PDF document text
- https://www.dooleysnaturalgas.com/ckfinder/userfiles/files/90593793191.pdfIn PDF document text
- http://olddieselparts.com/ckfinder/userfiles/files/49234281233.pdfIn PDF document text
- https://majubesar.com/contents/files/37798218710.pdfIn PDF document text
- https://erdenetpost.mn/userfiles/files/84464323852.pdfIn PDF document text
- https://aicpwdosaeast.com/ckfinder/userfiles/files/wejubogodiwasajibuwudu.pdfIn PDF document text
- https://agsposure.org/wp-content/plugins/super-forms/uploads/php/files/48c8fa5aa333a14dee4d2ce7b416e38f/34371557605.pdfIn PDF document text
- http://ezclasssites.com/var/wwww/dev-ezclasssites-com/data/files/zupiratomatalaluxujujipi.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000ebe6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEBE6 | 18796 bytes |
SHA-256: 49e563b899c5207b9394a136b2f4499c38fa269809c06386fa0ec3838a554f67 |
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font_01_sfnt_off00011c7a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11C7A | 10640 bytes |
SHA-256: f1133f1fb0193988903e6874f6c2d19584d9efc91620879fd875a1967299ce37 |
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font_02_sfnt_off000134a2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x134A2 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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