MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains numerous links to external websites, many of which are hosted on disposable domains or compromised CMS uploads, indicating a link farm designed to distribute malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware delivery via these links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9963
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://synerhu.ru/uplcv?utm_term=pdf+drive+search PDF link annotation
- http://2sisaccount.com/userfiles/files/gujepo.pdfIn PDF document text
- http://rucodelniza.ru/userfiles/file/kiwigegavoro.pdfIn PDF document text
- https://eric-parnes.com/ckfinder/userfiles/files/walubefoz.pdfIn PDF document text
- http://quinta.cl/upload/files/lujadanel.pdfIn PDF document text
- http://hanboo.cn/Uploads/file/2021090704561370554.pdfIn PDF document text
- https://ag-concept.ru/wp-content/plugins/super-forms/uploads/php/files/1ada8796958994376700b3e38c4ab174/gosujomizodolewedorafapa.pdfIn PDF document text
- http://www.alex-vasilkov.ru/images/wisdom/file/pefugubosetuz.pdfIn PDF document text
- http://ukwoodrecycling.com/userfiles/files/galilupedakafexux.pdfIn PDF document text
- https://ville-saintleonard.fr/pdf/zilevidarebamabuvofi.pdfIn PDF document text
- http://szerecsengyogyszertar.hu/editor_up/85517679352.pdfIn PDF document text
- https://uslugiinzynierskie.eu/eurostyl/photos/file/relel.pdfIn PDF document text
- http://hennel.hu/sources/elemek/file/40060837366.pdfIn PDF document text
- http://giasuthienphuc.com/Images_upload/files/jipobujalo.pdfIn PDF document text
- http://chafewyuok.handysociality.com/upload/files/dilidiraxol.pdfIn PDF document text
- https://desertflying.club/wp-content/plugins/formcraft/file-upload/server/content/files/16134ca7b77759---jujebaxibekumekoze.pdfIn PDF document text
- https://suacuacuontoanphat.com/upload/files/pemewuf.pdfIn PDF document text
- http://osstemcardiotec.com/files/fckeditor/file/8806375566132a9fda2286.pdfIn PDF document text
- http://tamtamphat.com/upload/files/89495657483.pdfIn PDF document text
- http://planao.com/ckfinder/userfiles/files/73775568164.pdfIn PDF document text
- https://vkgnassociates.com/dayafter/uploadimages/newsimages/file/12857583159.pdfIn PDF document text
- http://www.hcibatiment.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16134a81d79f5a---32208073491.pdfIn PDF document text
- http://eduomania.com/wp-content/plugins/formcraft/file-upload/server/content/files/16133a7e22e670---guvana.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_off0000c88f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC88F | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000e0a1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE0A1 | 18916 bytes |
SHA-256: d64118484b094d4a80e1d4cad87b38615052978f725fd01dc3c25591a1c5f1d1 |
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font_02_sfnt_off00011276.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11276 | 10272 bytes |
SHA-256: b89e902458b4e41ed36eea52448b0b4176a111389f26e166be81d5d5de7f209b |
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