MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF document contains numerous links to compromised WordPress sites and disposable hosting, many of which are disguised as PDF files themselves. The heuristic 'ML_NYX_PDF_MALICIOUS' and ClamAV detection strongly indicate malicious intent. The document body is heavily obfuscated, but the presence of external URIs and link farms suggests a phishing or malware distribution attempt, likely masquerading as a download manager.
Machine Learning
- Nyx PDF Classifier malicious score 0.9981
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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PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARMPDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
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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://medvor.ru/uplcv?utm_term=download+manager+android PDF link annotation
- http://6nergy.fr/6nergy/sites/default/user/file/32419732449.pdfIn PDF document text
- http://ever-pioneer.com/upload/files/koxabubu.pdfIn PDF document text
- http://riccaassociati.eu/userfiles/files/didalegoxej.pdfIn PDF document text
- http://www.gc-antey.ru/ckfinder/userfiles/files/30275527045.pdfIn PDF document text
- https://vgi-vn.vn/app/webroot/img/files/rekopudimud.pdfIn PDF document text
- http://skup-laptopow.com/wp-content/plugins/formcraft/file-upload/server/content/files/161409d904f889---kurusomex.pdfIn PDF document text
- http://4els.ru/uploads/images/files/kujuzekit.pdfIn PDF document text
- http://maidichike.com/upload/files/dewukepijejaxexe.pdfIn PDF document text
- http://hkxhjfc.ltd/uploads/files/20210906052612.pdfIn PDF document text
- https://mannerfeltdesignteam.se/ckfinder/userfiles/files/29481511404.pdfIn PDF document text
- http://mikailang.com/userfiles/file/20210905233813_1214581754.pdfIn PDF document text
- http://zaintik.org/files/galeria/files/webefiwupafodapasaseko.pdfIn PDF document text
- https://endeligmandag.no/e-brev/data/div/64450501370.pdfIn PDF document text
- https://jdbailbonds.com/wp-content/plugins/super-forms/uploads/php/files/4de5b5a78b0b0f66455e3cbf3d43fecb/wikosawaretuduxapegiwupum.pdfIn PDF document text
- http://jagatjyotischool.org/jagatjyotischool/userfiles/file/kowegojeber.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/47032751039.pdfIn PDF document text
- http://md-servicios.com/userfiles/file/71072798106.pdfIn PDF document text
- http://terapie-psi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1613286eb3b07c---50470030150.pdfIn PDF document text
- http://skup-laptopow.com/wp-content/plugins/formcraft/file-upload/server/content/files/161335c860e4cb---defekorajiladidopi.pdfIn PDF document text
- https://www.web2business.pt/wp-content/plugins/formcraft/file-upload/server/content/files/1613bba8aad12e---4029714843.pdfIn PDF document text
- http://strahovka66.ru/userfiles/file/gokukim.pdfIn PDF document text
- https://mamalight.net/business_school/uploads/file/21841557621.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_off0000bb79.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBB79 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000d38b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD38B | 17236 bytes |
SHA-256: f4af68d141415d2e3189676871f10e8ed855d589e851591bfd546222b02c565c |
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font_02_sfnt_off0000ffd9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFFD9 | 10412 bytes |
SHA-256: 1738dd906e286228463b964caf920fc8730f3e5d8b14fb525d77a7c7b161562a |
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