MALICIOUS
134
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript, which is a common technique for exploiting PDF vulnerabilities or redirecting users. The 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic indicates the document is designed to host numerous links on disposable domains, suggesting a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9953
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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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 http://cuacuonnhaxuongbinhduong.com/upload/files/40218432410.pdf In PDF document text
- http://cps-mbstu.edu.bd/app/webroot/js/ckfinder/userfiles/files/riviwu.pdfIn PDF document text
- https://resttour.com/images/userfiles/files/88325904098.pdfIn PDF document text
- http://vrieshorst.nl/images/uploads/file/zuwalubuv.pdfIn PDF document text
- http://hig-hegmann.de/userfiles/file/57061412042.pdfIn PDF document text
- http://daiquangsico.com/img_duhoc/files/80679956206.pdfIn PDF document text
- http://neuchina.org/userfiles/file/vekogevap.pdfIn PDF document text
- http://bigdoughpizza.com/uploads/files/loralu.pdfIn PDF document text
- http://steelbo.com/uploads/admins/u0/files/20210902133326.pdfIn PDF document text
- https://gesema.com/UserFiles/file/82266021854.pdfIn PDF document text
- https://cungcapthitdetuoi.com/app/webroot/files/images/pages/files/87810169602.pdfIn PDF document text
- http://crystal-lamp.ru/uploads/files/21103598160.pdfIn PDF document text
- http://studiocastigli.eu/userfiles/files/buzubikinebikuvuxu.pdfIn PDF document text
- http://ecohort.com/userfiles/files/wabijovozezetorajuxe.pdfIn PDF document text
- https://rougezenekar.hu/files/file/linisuzofon.pdfIn PDF document text
- http://toyotacri.com/userfiles/files/34114922609.pdfIn PDF document text
- https://hardlineconstruct.ro/app/webroot/files/userfiles/files/tipesogujufup.pdfIn PDF document text
- http://brothersaluminium.com.np/wp-content/plugins/formcraft/file-upload/server/content/files/16136d6ad409f6---jugofuzefa.pdfIn PDF document text
- http://hstairan.com/FCKeditor/editor/filemanager/connectors/php/userfiles/file/nuwef.pdfIn PDF document text
- http://umrllc.com/userfiles/files/61599646918.pdfIn PDF document text
- https://www.dyna-tech.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1613699eab5ca4---43930619924.pdfIn PDF document text
- http://ytlcases.com/userfiles/file/pivuwupukumosimukekofuso.pdfIn PDF document text
- https://clubesolbra.com/uploads/files/70555587400.pdfIn PDF document text
- https://living-stone.lu/userfiles/files/85348093558.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=song+vocal+remover+app+for+androidPDF 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_off0000d6f5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD6F5 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000ef07.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEF07 | 17208 bytes |
SHA-256: 6d60b35573b1c1b842690ff53ffcb60364341561868e97f04e299a6018926492 |
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font_02_sfnt_off00011b9a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11B9A | 10836 bytes |
SHA-256: 486c1c09258744bdc238c6d60dd297e520d8fe5aef9cee9e0b58f888d5451b7b |
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