MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics identified it as a link farm pointing to compromised WordPress uploads and disposable hosting, suggesting a phishing or malware distribution scheme. The embedded URLs likely lead to further stages of the attack, potentially for credential harvesting or payload delivery.
Machine Learning
- Nyx PDF Classifier malicious score 0.9822
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://medvor.ru/uplcv?utm_term=titration+of+sulphuric+acid+with+sodium+hydroxide+lab+report PDF link annotation
- https://aarhuskortet.dk/images/file/38142700245.pdfIn PDF document text
- http://tamilannuaire.com/var/www/vhosts/vps296430.ovh.net/tamilannuaire.com/images/file/zamijozedafefude.pdfIn PDF document text
- http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/moa8gpvvko70li60j0i7d9ars6/22760381427.pdfIn PDF document text
- http://www.garriagricola.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0cd374d091---towebanidoniwulopevumexaw.pdfIn PDF document text
- http://timelessmebel.ru/wp-content/plugins/super-forms/uploads/php/files/4e61823838ff660644fa8c9d94664195/nupanoxifata.pdfIn PDF document text
- http://www.kindytennis.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075fab40d87d---lujovilubutunopozojaru.pdfIn PDF document text
- http://statsale.com/data/upload/ck/files/vinojorena.pdfIn PDF document text
- https://adbetelparaguay.com/wp-content/plugins/super-forms/uploads/php/files/4c194ca75d8ea5061a731de269435f4a/48654257329.pdfIn PDF document text
- http://szentimresiklos.hu/upload/file/zodofeseronakupe.pdfIn PDF document text
- http://banning64reunion.com/clients/a/a7/a71e9339640f4be667ed55590a288245/File/68320618877.pdfIn PDF document text
- https://myclubowners.com/userfiles/files/kuxebivagibub.pdfIn PDF document text
- http://www.sunaryem.com.tr/wp-content/plugins/super-forms/uploads/php/files/n3jor6l6lkri9tgmnjf0d38qe2/ruwiravegeperox.pdfIn PDF document text
- http://sns.hu/_user/file/34209598775.pdfIn PDF document text
- http://acetuitioncentre.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160b0589996927---24682694444.pdfIn PDF document text
- http://www.hptindia.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609932b95e44d---41071738203.pdfIn PDF document text
- https://churchosonline.com/wp-content/plugins/super-forms/uploads/php/files/3ea92e3a4702b8e0035a238d86239309/86807696636.pdfIn PDF document text
- https://rhdplumbing.com/wp-content/plugins/super-forms/uploads/php/files/40edf636a95d05fd6fe730f1469a78be/jaxegabezit.pdfIn PDF document text
- https://socialacademy.gr/wp-content/plugins/super-forms/uploads/php/files/258c02f267d4cf826473c282f366a7fe/15511609021.pdfIn PDF document text
- https://vizzzio.ru/wp-content/plugins/super-forms/uploads/php/files/cb3a4bff99fc94e5a0d433dceed70abe/tuzetaxexowakivosogiliwo.pdfIn PDF document text
- https://donnasalon.ru/wp-content/plugins/super-forms/uploads/php/files/acb92aa891ed98cab5c5dd2c74718a76/54420871563.pdfIn PDF document text
- https://trsbarriersdirect.com/wp-content/plugins/super-forms/uploads/php/files/ajoh16ualgkpl9bae3r5nk588g/56998063740.pdfIn PDF document text
- http://www.korayozelguvenlik.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e4b55741a1---gotuj.pdfIn PDF document text
- http://aftckwt.com/uploads/file/45842952255.pdfIn PDF document text
- http://pajurioverslas.lt/ckfinder/userfiles/files/50537782856.pdfIn PDF document text
- https://malimbe.africa/wp-content/plugins/super-forms/uploads/php/files/011485d8015a1c7ef760a0f9a230a4b2/jogaturidibob.pdfIn PDF document text
- http://www.peopleoftheheath.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c28e9aa9eaa---kaninojakawesep.pdfIn PDF document text
- http://www.goataxiservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609cdd82d21b9---goleduvose.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_off0001062d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1062D | 11388 bytes |
SHA-256: 8fecff5550daf34f1ca76a6faf042605831a9976240cce647afcc10c8f8106ab |
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font_01_sfnt_off000120bd.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x120BD | 17456 bytes |
SHA-256: 57a9b0b223232f061167487e675eecef411ec8f9510c7bd347c512e0911a7464 |
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font_02_sfnt_off00014eee.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14EEE | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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