MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains numerous links pointing to compromised CMS upload directories and disposable hosting, indicative of a link farm designed to redirect users to malicious content. ClamAV and ML classifiers flagged this PDF as malicious, specifically as a phishing trojan. The presence of multiple external URIs and a link farm structure strongly suggests an attempt to lure users to external, potentially harmful, resources.
Machine Learning
- Nyx PDF Classifier malicious score 0.9947
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 https://www.unicodesystems.com/wp-content/plugins/super-forms/uploads/php/files/s465rnlqc8m2c0j6c5ef14eqf7/68892826346.pdf
- http://www.marcado.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16085566906087---kisel.pdf
- http://precedent.by/_newsite/images_from_html_editor/file/kujofizugetesimalenobi.pdf
- https://www.frankreich-ferien.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1607889cc94f14---71559593661.pdf
- https://transcendenceit.com/wp-content/plugins/super-forms/uploads/php/files/c232fa6021e5592ae504bc106a08a1cb/luxetezorakalunojodaxuba.pdf
- https://sckprime.com/wp-content/plugins/super-forms/uploads/php/files/4221e4070c09ad6375d7d8aa1246745f/2857615164.pdf
- http://www.leesii.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607368d12f731---walefuwazizegipafaf.pdf
- https://www.properties-thassos.com/wp-content/plugins/super-forms/uploads/php/files/7v38u6unm90b6r9ojshbnuts6v/buxal.pdf
- http://www.skup.it/wp-content/plugins/formcraft/file-upload/server/content/files/16093b8567db62---41513764748.pdf
- https://voicelux.ru/wp-content/plugins/super-forms/uploads/php/files/a1b86e3909ba5f9c6354e3f959f654cf/36837502583.pdf
- http://kraljicabih.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609cbfc7e1dfd---poroseze.pdf
- https://divorcioconsensual.com.br/wp-content/plugins/super-forms/uploads/php/files/51e358dc7af8d5dc6c84c4d2a38266c3/banegepepe.pdf
- https://adm.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/95a6102654cb04f5131ee1ab5d3941ad/98244745895.pdf
- https://www.golaw.net/wp-content/plugins/formcraft/file-upload/server/content/files/160982d5c5a184---43814766738.pdf
- http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/160d8974c2b3ba---23700117007.pdf
- https://sumangold.net.vn/wp-content/plugins/super-forms/uploads/php/files/hir4s0l3vjaf6n91c96abd1s17/jewipotakevitipajisosux.pdf
- http://jrmhandling.nl/upload/file/fizuxijivewuxukiweruwexe.pdf
- http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/3dc20bd984b896ae9724badafed5fac9/fivigebupo.pdf
- https://www.wikiwebagency.it/wp-content/plugins/super-forms/uploads/php/files/0ae99442eb458cf37bf4bfedc748a260/55285903936.pdf
- http://3sdent.com/upload/files/50377716705.pdf
- https://tidurmalam.com/contents//files/lifisoxomofamosebumom.pdf
- https://rffsev.ru/wp-content/plugins/super-forms/uploads/php/files/414316a3d6d1705878cc392ed65c8ff8/6438378494.pdf
- http://poorclarescork.ie/images/tewoporezojidaxujol.pdf
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ffbea3b0b0---31498535118.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=class+8+science+chapter+15+mcq
- 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_off0000f30c.bina474418d7418e093757becc92eaaf91a11e5cd89b45e343d3413c7912fce6e8a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF30C | 16448 bytes |
font_01_sfnt_off00011da5.bin8221cc73cf2c36f49a61e08c1ed7c02d3574cbd65c91aaf6bc9e3de6b96503fd |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11DA5 | 11088 bytes |
font_02_sfnt_off0001375a.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1375A | 16792 bytes |
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