MALICIOUS
174
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 User Execution: Malicious File
The sample is a PDF document that contains embedded JavaScript and numerous external URIs, many of which point to disposable hosting. The 'SE_BROWSER_INSTALL_LURE' heuristic indicates the document's content is designed to trick users into installing a browser extension or update, a common social-engineering tactic. The embedded JavaScript likely facilitates this lure by interacting with the user or redirecting them to malicious sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9949
Heuristics 7
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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://medvor.ru/uplcv?utm_term=mac+big+sur+android+emulator PDF link annotation
- http://toflight.mobi/attachment/ckeditor/files/d06897d53931e3eaff5833f79773c68c.pdfIn PDF document text
- https://jatransfer.com/userfiles/file/daropazobofazaketusow.pdfIn PDF document text
- http://kaizousha.com/js/upload/files/gegozopewefawinilawuro.pdfIn PDF document text
- http://kawoka.com/userfiles/file/54536474327.pdfIn PDF document text
- http://belstroyiz.ru/img/file/fajomom.pdfIn PDF document text
- https://tedvandergulik.nl/userimages/file/ruguwovapunonolum.pdfIn PDF document text
- http://myappartement.de/web/editor/files/21267408022.pdfIn PDF document text
- http://appinaris.net/ckfinder/userfiles/publics/files/89752583713.pdfIn PDF document text
- http://lawyermo.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/zutaf.pdfIn PDF document text
- http://kramor.bg/userfiles/file/fudapukos.pdfIn PDF document text
- http://corporatiegids.nl/uploads/files/pabugajinomo.pdfIn PDF document text
- http://redemaisfarma.com/userfiles/file/63988187766.pdfIn PDF document text
- http://dohertylaw.net/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/tosenixezeta.pdfIn PDF document text
- http://cmtl.in/uploads/userfiles/file/file/48913614537.pdfIn PDF document text
- http://teormech.ru/teormech/usrimg/file/zulikexoxawawajixu.pdfIn PDF document text
- http://soloparamideco.com/js/new/fckeditor/userfiles/file/nuguzar.pdfIn PDF document text
- https://www.fibertech1.com/my_content/js/ckfinder/userfiles/files/pevilagugurufuzifepaf.pdfIn PDF document text
- https://vanrun-it.nl/userfiles/files/runomume.pdfIn PDF document text
- https://www.audioclinica.pt/wp-content/plugins/super-forms/uploads/php/files/2vmmdfvja3co8jkine5lgil9lf/tiwirujudifufiz.pdfIn PDF document text
- http://gojjang.com/uploads/files/87478403723.pdfIn PDF document text
- https://bawaniint.com/ckfinder/userfiles/files/loxizodagikunigek.pdfIn PDF document text
- http://freestyler.cz/img/file/49939383635.pdfIn PDF document text
- https://www.chortho.co.uk/wp-content/plugins/super-forms/uploads/php/files/8k353eb1g0t7r80rsq07dktfva/12607108865.pdfIn PDF document text
- https://299-45.com/CKEdit/upload/files/jatixeliwog.pdfIn PDF document text
- http://jagdrevier.hu/upload/images/file/35285137033.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_off0000d8f0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD8F0 | 10948 bytes |
SHA-256: a9b506bc21b1e079db3ddc00e05513acb59f50a8f4f5d53005a02f8a95db76d1 |
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font_01_sfnt_off0000f21f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF21F | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00010a31.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10A31 | 18352 bytes |
SHA-256: 7f741634732d30298dbf2b8a8d6ccb93ffa9002cf5f161b72dd9cfdea75ff824 |
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