MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged as malicious by ML classifiers and ClamAV. It contains numerous external links, many pointing to compromised WordPress sites and disposable hosting, suggesting a link farm designed to redirect users. The presence of embedded URLs and the nature of the heuristics indicate a phishing or malware distribution attempt, likely using JavaScript to facilitate the redirection.
Machine Learning
- Nyx PDF Classifier malicious score 0.9827
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://coretry.ru/uplcv?utm_term=in+app+apk
- http://pro-group.ru/userfiles/files/35082196358.pdf
- http://timebymtm.com/upload/files/biresefuvowegap.pdf
- http://teedinmaesai.com/user_img/file/82882432311.pdf
- http://www.risingstars.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1614c9ae5dcba4---vowirivopelivebozibilel.pdf
- https://cvssteelex.com/ckfinder/userfiles/files/76398498100.pdf
- https://alfa-clining.ru/wp-content/plugins/super-forms/uploads/php/files/47f05e90846a5727c69fb385d987e5fc/70170581792.pdf
- http://pneusmarene.it/images/file/roxesumes.pdf
- http://sun-green.be/ckfinder/userfiles/files/nijofobevewuma.pdf
- https://mygamedaysports.com/wp-content/plugins/super-forms/uploads/php/files/1da5f3a14835f3fb374430b188b67abb/68268522116.pdf
- http://unsersohn.ch/images/file/78260055730.pdf
- http://limpiasol.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614225a4e2611---26394110572.pdf
- http://azs-szermierka.pl/zdjecia/fck/file/lijerazaz.pdf
- https://cleanenergy.mn/uploads/files/jujedafurisuko.pdf
- https://inprovituruguay.com/ckfinder/userfiles/files/roxazunexojavelamigezusi.pdf
- https://www.pelicanfinancialnetwork.com/ckfinder/userfiles/files/tikakin.pdf
- http://yjccnc.com/upload/files/66707943450.pdf
- http://revize-elektro.info/UserFiles/File/jekudawerufuwojugidoxima.pdf
- http://agataklimowska.pl/userfiles/file/36857012200.pdf
- http://sweet-sugar.de/images/uploadedimages/file/lisiwibu.pdf
- http://nwatchonline.info/userfiles/file/wavig.pdf
- http://branonperformance.com/ckfinder/userfiles/files/febevowotetesovolinuj.pdf
- https://www.scanworld.se/wp-content/plugins/formcraft/file-upload/server/content/files/1614a2c225f645---28828244785.pdf
- https://istocdukkan.com/userfiles/files/47670145620.pdf
- http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/445e7d43d74d2917f836e94c161d558c/55342984099.pdf
- http://zdrowejaja.com/Upload/file/79658683434.pdf
- http://alompar.hu/uploads/content_files/files/senagowulirirubu.pdf
- https://yournew.site/wp-content/plugins/super-forms/uploads/php/files/e1r7qki31cqejvvn72ctc78mi6/57793879775.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000b93f.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB93F | 16792 bytes |
font_01_sfnt_off0000d151.bin5577bf873a3a57abfd069bfbb6065bdba518d59197b079a199524ab70b6b9aa3 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD151 | 20860 bytes |
font_02_sfnt_off00010758.bin570c5e1f57cbb4cb98bc5fee7b4e325a639dfec430f388c431e5eebe16474ae1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10758 | 9532 bytes |
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