MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF file is identified as malicious by ML classifiers and ClamAV, indicating a phishing or malware distribution attempt. It contains a link farm pointing to compromised WordPress sites and other disposable hosting, likely serving as a lure to download further malicious content. The presence of multiple external URIs and the PDF_SEO_DISPOSABLE_LINK_FARM heuristic strongly suggest a phishing or malware distribution campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
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://coretry.ru/uplcv?utm_term=factory+physics+third+edition+pdf+free
- https://www.lumisolar.pe/wp-content/plugins/formcraft/file-upload/server/content/files/16082066c643f1---23089269093.pdf
- https://bursaceviritercume.com/wp-content/plugins/formcraft/file-upload/server/content/files/160720549dc821---72063459874.pdf
- http://conwaychristian.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607ccb16626f5---65868775162.pdf
- http://xn--clinicaquirogavilario-vbc.com/wp-content/plugins/super-forms/uploads/php/files/ele7u353kj1jgsmtv48c5m7df3/60209751324.pdf
- https://www.opdrrustukalac.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a81b05be2f---vedesotezatuguvatu.pdf
- http://www.maarsehoveniers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160b22a10108a1---jebiremumumozuwokeruxek.pdf
- https://workinhotel.com/upload/fckfile/nemopo.pdf
- https://noble-worldwide.com/wp-content/plugins/super-forms/uploads/php/files/21463fa7af8737ca7678d0f549958c50/50461947300.pdf
- https://hpx.com.ua/wp-content/plugins/super-forms/uploads/php/files/7bc866edb656e3b99d0493b8ea0e95d1/57265675991.pdf
- http://claudiodauelsberg.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a6770bded89---17173897361.pdf
- https://londonvipchauffeur.co.uk/wp-content/plugins/super-forms/uploads/php/files/9048b7660f55fc0a4e7fbe460a4c38e7/zajazesoluvewu.pdf
- https://parquesanalbertohurtado.cl/ckfinder/userfiles/files/janamajidivur.pdf
- http://becro-plast.hr/wp-content/plugins/formcraft/file-upload/server/content/files/1608068d4b2809---sevabub.pdf
- https://protechlighting.com/wp-content/plugins/super-forms/uploads/php/files/85843fda607fc4c35a47201a711a4ecf/62134640775.pdf
- https://velvetskin.pl/wp-content/plugins/super-forms/uploads/php/files/76d9dc70d7ef7b440b3e26a59a28f7d8/fakedonimegekugafaluj.pdf
- http://sciencevier.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076126d558d9---sirawomuwulajijawisufa.pdf
- http://www.mywil.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1607e7a4578596---85185772233.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- 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://scripts.sil.org/OFL
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000dd6b.bine7c8d6ac21893d38acaf99b089fdaa984432c0724e9eae2a81c3453348e96dd6 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDD6B | 5268 bytes |
font_01_sfnt_off0000ef5f.bin61773660f2c9c59e22e25be1e4b664bbdbfb10ad72b37d8b27fe49c23d1b11ef |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEF5F | 10724 bytes |
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