MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The file is identified as malicious by ClamAV and an ML classifier, and exhibits characteristics of a link farm. It contains numerous URLs pointing to other PDF files, many hosted on potentially compromised WordPress sites or disposable domains. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic indicates a deliberate attempt to manipulate search engine rankings or distribute malicious content through a network of links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9982
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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 http://brixtontaxi.com/survey/userfiles/files/buxis.pdf In PDF document text
- http://leinerpakgelatine.com/survey/userfiles/files/1717394542.pdfIn PDF document text
- https://digireg.ru/upload/xejawisofaros.pdfIn PDF document text
- http://vedepcuaem.com/luutru/files/41082500861.pdfIn PDF document text
- https://aftaplan.com/works/peepsparty/html/upload_files/file/15104180419.pdfIn PDF document text
- http://elcolono.net/userfiles/files/xideruvizike.pdfIn PDF document text
- https://humantouchtranslations.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/1612f37f74756b---matasumevorazirib.pdfIn PDF document text
- https://alaskaproauto.net/nbloom/fckuploads/file/widodanodigiropixo.pdfIn PDF document text
- http://archetipoingegneria.it/userfiles/files/13670213359.pdfIn PDF document text
- http://agedwedfjtj.pretty-match.com/upload/files/79103846667.pdfIn PDF document text
- http://nissanotogovap.vn/uploads/images/files/dafirelu.pdfIn PDF document text
- http://www.mousumibanerjee.com/fckimages/file/27699110681.pdfIn PDF document text
- http://gsoam.ge/wp-content/plugins/formcraft/file-upload/server/content/files/1614d16b041de2---65980236630.pdfIn PDF document text
- http://shamayachts.com/upload/file/tusase.pdfIn PDF document text
- https://sainaudit.mn/File/konogexir.pdfIn PDF document text
- http://famcareconnect.org/wp-content/plugins/formcraft/file-upload/server/content/files/1615087ec57f3e---silasamalafudore.pdfIn PDF document text
- http://clarksville.net/wysiwygfiles/file/kenapifajewosed.pdfIn PDF document text
- http://jaluzipro.ru/public/userfiles/file/gasawimuzu.pdfIn PDF document text
- http://www.neoneofitou.com/ckfinder/userfiles/files/44790233521.pdfIn PDF document text
- http://twapp.freshkon.com/upload/files/rorigilisemafekadafezesu.pdfIn PDF document text
- https://oferta.lt/i/File/salow.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/FevRqgeaUVY/uplcv?utm_term=how+to+change+refresh+rate+in+redmi+note+7+proPDF link annotation
- https://tes-sys.com/uploads/ckfinder/files/20210904/16307273705824.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_off0000b110.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB110 | 14664 bytes |
SHA-256: 634a7e7fddb2287b4d731bf4da832ba0644a7435a5ec0fc2d665285c0263d7a1 |
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font_01_sfnt_off0000d643.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD643 | 11148 bytes |
SHA-256: d5f51c722761b9719a690bf30bda322e3c3857571221c2ed290d67f90ab337c4 |
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font_02_sfnt_off0000f003.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF003 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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