MALICIOUS
174
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains embedded JavaScript and multiple external URLs, some of which are hosted on disposable domains and appear to be part of a link farm. The 'SE_BROWSER_INSTALL_LURE' heuristic indicates the document's content is designed to trick users into installing malicious software disguised as a browser update or extension. The embedded JavaScript likely facilitates the download and execution of a secondary payload.
Machine Learning
- Nyx PDF Classifier malicious score 0.9943
Heuristics 7
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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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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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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://coretry.ru/uplcv?utm_term=all+file+converter+free+download PDF link annotation
- http://relaxzenter.com/uploads/files/27540576578.pdfIn PDF document text
- https://hantverksakuten.se/ckfinder/userfiles/files/vipurevosasuwimamisisen.pdfIn PDF document text
- https://www.singaporemedicalclinic.com/ckfinder/userfiles/files/97178003102.pdfIn PDF document text
- http://sherwoodchambergolf.com/ckfinder/userfiles/files/67073815764.pdfIn PDF document text
- http://mebizstekla.ru/userfiles/file/57253128410.pdfIn PDF document text
- https://ngonluathan.com/images/ckeditor/files/68397407520.pdfIn PDF document text
- https://aradmissions.com/ci/userfiles/files/54263171207.pdfIn PDF document text
- http://dezis.ru/uploads/files/kames.pdfIn PDF document text
- http://metabolitplus.ru/files/file/sigej.pdfIn PDF document text
- http://dossalas.com/wp-content/plugins/super-forms/uploads/php/files/a86aa69824132e32214efc26d50b7724/labegadisukabuwepula.pdfIn PDF document text
- https://www.vek-bg.com/app/templates/js/ckfinder/userfiles/files/4553619378.pdfIn PDF document text
- https://chilegastronomia.cl/uploads/userfiles/files/33135486601.pdfIn PDF document text
- http://secoinblock.com/upload/files/rozasaf.pdfIn PDF document text
- http://ultraljud.nu/bild/files/gikopumewevipiji.pdfIn PDF document text
- http://automotiveenergy.cz/userfiles/file/wulosanajuvubabe.pdfIn PDF document text
- http://uniquecharacters.com/upload/files/98806357350.pdfIn PDF document text
- http://stacjaregeneracja.pl/userfiles/file/74982233721.pdfIn PDF document text
- http://pololanna.com/user_img/files/zoludimonopozitunibuguje.pdfIn PDF document text
- http://vertracapital.com/uploads/files/tovuxopufuwodifo.pdfIn PDF document text
- http://mudrberanova.cz/userfiles/file/41108763712.pdfIn PDF document text
- https://bandotrading.it/uploads/file/benelepadifuvojidul.pdfIn PDF document text
- https://ebooksweb.net/files/file/28451983909.pdfIn PDF document text
- http://www.smartlandgroup.com/ckfinder/userfiles/files/24305294655.pdfIn PDF document text
- https://www.histoiresdegroupes.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f01d19dd3c---rejijufusefag.pdfIn PDF document text
- https://newegys.egyseg.eu/ckfinder/userfiles/files/88865233096.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_off0000c7a2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC7A2 | 17296 bytes |
SHA-256: f4b56bf518e559c47b090f154e309cca1da23356dce87ae25b09923d908ad1ed |
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font_01_sfnt_off0000f3d8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF3D8 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00010bef.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10BEF | 10436 bytes |
SHA-256: 63bae8b9c2c5a74fbca13f3471e9b31d27f8450d7d3d0d8b4684ccf45968ff6d |
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