MALICIOUS
166
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF document contains numerous external links, many pointing to other PDF files on disposable domains, indicating it functions as a link farm. The heuristic 'PDF_RANDOM_URL_LINK' and 'PDF_SEO_DISPOSABLE_LINK_FARM' strongly suggest a malicious intent to redirect users to potentially harmful content. While no scripts were explicitly extracted, the presence of embedded URLs and the ML classification indicate a high likelihood of malicious activity, possibly related to phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9840
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 to algorithmically-generated URL high PDF_RANDOM_URL_LINKPDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
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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://krisoc.ru/uplcv?utm_term=vidmate+download+for+android+latest+version PDF link annotation
- http://okna-stv.ru/userfiles/files/39390288921.pdfIn PDF document text
- http://koddous.com/userfiles/file/fiwogure.pdfIn PDF document text
- http://studiogiamberardino.it/userfiles/files/kemobiriwidetokulanunu.pdfIn PDF document text
- https://qigoodteam.com/uploads/files/202108311956263930.pdfIn PDF document text
- http://wernitznigg.at/files/42841895009.pdfIn PDF document text
- http://charolais-hessen.de/write/userfiles/file/koroxun.pdfIn PDF document text
- http://patriabrno.cz/userfiles/files/55219514922.pdfIn PDF document text
- http://demirlermetal.com/resimler/files/nigeribitadeponikujef.pdfIn PDF document text
- http://leprofit.ee/cmsfile/contentfiles/lowezomadiset.pdfIn PDF document text
- https://toppelletmachine.com/d/files/57809831588.pdfIn PDF document text
- http://musicincw.com/fckeditor/userfiles/image/bubora.pdfIn PDF document text
- http://bapassamarinda.id/assets/ckfinder/core/connector/php/uploads/files/didor.pdfIn PDF document text
- https://hanedantoptan.com/upload/files/xosodebidokerinuguso.pdfIn PDF document text
- https://motelandratecuci.ro/userfiles/file/35516661079.pdfIn PDF document text
- http://csc-0411.com/userfiles/file/20210910151806_gfyhxu.pdfIn PDF document text
- https://china-glass-mosaic.vegner.com/userfiles/files/20210905_191917.pdfIn PDF document text
- http://watdoenwevandaag.nl/upload/kupevitob.pdfIn PDF document text
- http://xinchenfast.com/upload/file/56495429905.pdfIn PDF document text
- https://wacee.net/wp-content/plugins/formcraft/file-upload/server/content/files/1613a901dc3e5a---wodexinakav.pdfIn PDF document text
- https://taybaite.com/userfiles/file/83801576280.pdfIn PDF document text
- https://sitpchemcieszyn.pl/_sitpchem/file/dataxe.pdfIn PDF document text
- https://chptravel.ir/data/file/tilowutanumedo.pdfIn PDF document text
- http://ozhelalikram.de/resimler/files/30010330975.pdfIn PDF document text
- http://ambulatorioveterinariopisillibertozzi.eu/userfiles/files/fomakebetezemufirez.pdfIn PDF document text
- http://webcertain.asia/contentupload/fckeditorUploads/organization_/file/dorobolorimuro.pdfIn PDF document text
- https://dodatnagarancija.com/userfiles/file/zelililem.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_off0000b798.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB798 | 10636 bytes |
SHA-256: d73120e03f2c44ba80ecc6dd910a455f96ccfea40a8529b81027154a7e46be9a |
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font_01_sfnt_off0000cff3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCFF3 | 15480 bytes |
SHA-256: aa0ca3723c2e4a629f87aacd9fcee39bea9184cc2c20ccd23a62434ae90a835a |
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font_02_sfnt_off0000f741.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF741 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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