MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was detected as malicious by ClamAV and an ML classifier. It functions as a link farm, containing numerous URLs pointing to compromised WordPress upload directories and other disposable hosting. These links likely serve as redirects to phishing pages or malware download sites, a common tactic for initial access via spearphishing attachments.
Machine Learning
- Nyx PDF Classifier malicious score 0.9866
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://msr-hudsonproperties.com/wp-content/plugins/super-forms/uploads/php/files/950c467cee6fbbe9c813515166e878d5/8659565737.pdf
- http://verkoop-je-wagen.be/wp-content/plugins/formcraft/file-upload/server/content/files/160afb4003f34a---majugujidan.pdf
- https://jfefood.com/wp-content/plugins/super-forms/uploads/php/files/aca199b252032b9edcf678a6cf0b006e/mezodededa.pdf
- http://www.reenactmentmarket.eu/images/wyswig_images/file/nobiwopupel.pdf
- https://homini.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160ab793a9e92e---24994938841.pdf
- http://irmascaritasdejesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/16098cd51c46f5---girafowelanesisoga.pdf
- https://tlpnw.com/wp-content/plugins/super-forms/uploads/php/files/4680b0d309940d2c27a0e2aa387c3cd1/vitowevowinole.pdf
- http://www.associatedomains.com/wp-content/plugins/formcraft/file-upload/server/content/files/160854e0061f09---todibeguvipadajukukagewa.pdf
- https://mudateconmigo.cl/wp-content/plugins/super-forms/uploads/php/files/dca6ee90e2a5671144ebda37183c9ced/lokoteguwadek.pdf
- http://rajskiewakacje.pl/userfiles/file/43337628110.pdf
- http://sushi-belovo.ru/files/77219499966.pdf
- https://ppuhperspektywa.pl/files/edytor/file/kegesudijuwivebe.pdf
- https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098a2fbaa21d---wefekuwuxijo.pdf
- http://vipavtoufa.ru/wp-content/plugins/super-forms/uploads/php/files/a04f5dd3b70fa547820be0d949c65b05/masiwufus.pdf
- https://realwebguys.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c2c076d2dc---85356005175.pdf
- http://mirandatutoringcentre.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160ab69ae10559---72341040610.pdf
- http://www.absolutecateringla.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab625ccd775---88663487539.pdf
- https://www.northamericatalk.com/wp-content/plugins/formcraft/file-upload/server/content/files/160735c7024632---26776983594.pdf
- http://adhdadvisory.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b47313680cb---lekugipelazuratubaw.pdf
- http://xn--b1ahhafccpgkb2bxo.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/edcc6af80fd7f71a3b39837399818987/30386488337.pdf
- https://presstone.hu/userfiles/file/44975390146.pdf
- https://extremetour74.ru/wp-content/plugins/super-forms/uploads/php/files/f834a40383b1863e978e8bd4ec3f231c/51561012981.pdf
- http://refah4ter.info/basefile/hotelrefah4terir/files/vefenuxozaguderu.pdf
- https://www.audioclinica.pt/wp-content/plugins/super-forms/uploads/php/files/3c7flgcjhdv7mpcu2bhe1npl6a/23832862210.pdf
- https://www.kiteschule-eckernfoerde.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b5cdbcc168c---32895311611.pdf
- http://scissortailfarms.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078fc088d288---18783483605.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=availability+heuristic+bias+definition
- 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_off00016119.binb544cad1c8f9d5a884a8ad32a35c3a4c7a82c4bfd68ee1278e7db39eb1f6c8e8 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x16119 | 10976 bytes |
font_01_sfnt_off00017a96.bina1ea6bd94e6550eac4c0b3a249c0dd3677a48b3ab14fdef89b6e2904c41e105d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x17A96 | 17736 bytes |
font_02_sfnt_off0001a841.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1A841 | 16792 bytes |
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