MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The ML classifier and ClamAV detection strongly indicate maliciousness. The PDF contains numerous external links, many of which are on disposable domains, suggesting a phishing or link-farming operation. The presence of embedded URLs and the heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' point towards a campaign to redirect users to malicious sites, likely for credential harvesting or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9978
Heuristics 5
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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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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://infrive.ru/uplcv?utm_term=number+neither+prime+nor+composite PDF link annotation
- http://www.andreapondika.cz/file/sebipuwonuliwutuwoxudat.pdfIn PDF document text
- https://nhanloc.net/userfiles/file/81908447769.pdfIn PDF document text
- http://geluidsadviesnederland.nl/ckfinder/userfiles/files/38215697658.pdfIn PDF document text
- https://neksav.com/upload/ckfinder/files/38851018922.pdfIn PDF document text
- http://cafemsoffice.com/userfiles/files/57942560649.pdfIn PDF document text
- http://sanarina.de/ckfinder/userfiles/files/pukevazili.pdfIn PDF document text
- https://htcpost.vn/vietpost.vn/img_content/file/mipasunenu.pdfIn PDF document text
- http://naturpix.ch/cmsimages/file/kamewidepin.pdfIn PDF document text
- http://www.maarsehoveniers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1612f50a000477---79011446591.pdfIn PDF document text
- http://toroisg.com/public/images/files/zuzulefukemujiku.pdfIn PDF document text
- http://eikenhorstgroep.nl/userfiles/file/duvemegidikenizidixapevik.pdfIn PDF document text
- http://volker-issmer.de/userfiles/file/lozevupavoboxuve.pdfIn PDF document text
- http://ip-golubev.ru/ckfinder/userfiles/files/48758162226.pdfIn PDF document text
- http://haohanlegend.com/Uploadfiles/files/25879039177.pdfIn PDF document text
- https://fibaquitaine.fr/cebatrama/userfiles/files/96962742849.pdfIn PDF document text
- https://www.breastcancerfoundation.in/wp-content/plugins/super-forms/uploads/php/files/d2b3d11df33db04084b9682f16222c0d/96215509597.pdfIn PDF document text
- https://gopherscopes.com/userfiles/file/pivolano.pdfIn PDF document text
- https://supportsystemsvainc.com/home/ssvi/public_html/ckfinder/userfiles/files/83217723615.pdfIn PDF document text
- http://votava2.altrodesign.eu/ckfinder/userfiles/files/duwomoriwazuresojarebupo.pdfIn PDF document text
- https://pakianco.ir/data/image/uploads/news/files/fuguxafasogudezopakanus.pdfIn PDF document text
- http://minuspk.ru/minuspk.ru/userfiles/file/39410052020.pdfIn PDF document text
- https://sharenkon.com/files/83299693824.pdfIn PDF document text
- http://sozopolihills.com/userfiles/file/9683003701.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_off0000b7a9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB7A9 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000cfbb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCFBB | 15824 bytes |
SHA-256: dc7798688f67351e770b959844a4a870af268a0a352f702bea313b5e9784a1f3 |
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font_02_sfnt_off0000f811.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF811 | 10648 bytes |
SHA-256: c10feef9bcc5e40a03d75aba2ae85541d25074fc1eaa8ac3c698f62320a43ed5 |
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