MALICIOUS
166
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample was flagged by ML classifiers and ClamAV as malicious, with heuristics indicating it's a phishing lure designed to trick users into installing malicious software by masquerading as a necessary browser update or extension. The document body is heavily obfuscated, preventing a clear understanding of its direct content, but the presence of numerous external links and the 'SE_BROWSER_INSTALL_LURE' heuristic strongly suggest a social engineering attack. No scripts were extracted, limiting the analysis of direct execution vectors.
Machine Learning
- Nyx PDF Classifier malicious score 0.9965
Heuristics 6
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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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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 http://vivo-mebel.ru/upload/file/34853289644.pdf In PDF document text
- https://syteq-pro.com/userfiles/file/jaruvexatunizigivijomupug.pdfIn PDF document text
- http://hzxgdz.com/images/upload/File/45659230785.pdfIn PDF document text
- http://highspiritsmusic.com/ckfinder/userfiles/files/1012664917.pdfIn PDF document text
- http://sibaco.ru/ckfinder/userfiles/files/78560221808.pdfIn PDF document text
- http://kartelabasligi.com/images_upload/files/kuteguzisumopok.pdfIn PDF document text
- https://serka.com/serka/upload/files/litadazibuzasunoki.pdfIn PDF document text
- http://luluscafeonline.com/uploads/files/rekigonudemowemuvubatu.pdfIn PDF document text
- https://raselapp.com/userfiles/file/gujonakuzitew.pdfIn PDF document text
- http://upoart.com/ckfinder/userfiles/files/sojade.pdfIn PDF document text
- http://flemingdecal.com/uploads/assets/file/61548577176.pdfIn PDF document text
- http://honmamon-s.com/img_seminar/userfiles/file/17248131828.pdfIn PDF document text
- http://uyaviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/16158521c7f167---masapuwakedetoru.pdfIn PDF document text
- http://simkoongschool.com/uploads/editer/files/jowadiwokodanegikizugobug.pdfIn PDF document text
- http://irs-messtechnik.at/upload/xobikovuribebejotibu.pdfIn PDF document text
- http://paitoonbox.com/userfiles/files/kivoba.pdfIn PDF document text
- https://affordans.com/ckfinder/userfiles/files/rovepin.pdfIn PDF document text
- http://rapet.hu/files/juvutuvulevukaju.pdfIn PDF document text
- http://drinkandshrink.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1613157563699d---75088651138.pdfIn PDF document text
- http://ornito-silesia.eu/userfiles/file/935648755.pdfIn PDF document text
- https://ntct-dz.com/ckfinder/userfiles/files/rosalimasilama.pdfIn PDF document text
- http://gojjang.com/uploads/files/kekadagojesomubin.pdfIn PDF document text
- https://asiantms.com/ckfinder/userfiles/files/53034358634.pdfIn PDF document text
- http://chinasoftcore.com/userfiles/file///bunujevivexifimu.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=project+expense+sheetPDF link annotation
- 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_off000109cc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x109CC | 10404 bytes |
SHA-256: 9f999c7640f6f3d5c350ef4325b92545c3a1b5d984421c6b9b192f1f1d283b1c |
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font_01_sfnt_off00012154.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12154 | 18892 bytes |
SHA-256: ae05141c0ac5921f61ea360bde4af6003882788b663f1238777185d4fe7dc5e5 |
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font_02_sfnt_off00015234.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x15234 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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