MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF file identified as malicious by ClamAV and an ML classifier. It contains numerous embedded URLs, many of which point to compromised WordPress sites, suggesting a link farm designed to redirect users to malicious content. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a non-clustered link farm on disposable hosting, further supporting a phishing or scam attempt. The presence of PDF_URI and EMBEDDED_URL heuristics confirms the redirection mechanism.
Machine Learning
- Nyx PDF Classifier malicious score 0.9981
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=bulsho+ewallet+download PDF link annotation
- https://www.sussexweddingservices.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/161336651a647e---mexuzi.pdfIn PDF document text
- http://cameradungphat.com/uploads/files/mivometilibakupejaw.pdfIn PDF document text
- http://leadershipcareer.kr/fckeditor/_upload/file/16560751862.pdfIn PDF document text
- https://wyslijpaczki.pl/app/webroot/files/userfiles/file/masinilipedexeronob.pdfIn PDF document text
- http://hkbroadwin.com/userfiles/77812778526.pdfIn PDF document text
- http://sisparts.pl/zdjecia/fck/file/daxitutefopiguretune.pdfIn PDF document text
- http://spellenindex.nl/images/uploads/1154244486.pdfIn PDF document text
- http://multiseal.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/1613ae2c8bc772---90362272583.pdfIn PDF document text
- http://wakabaeducation.com/userfiles/file/47219983421.pdfIn PDF document text
- https://hps-gruppe.com/wp-content/plugins/super-forms/uploads/php/files/rflnbim7ie42b3rdun3432bue0/79038599757.pdfIn PDF document text
- http://extrastyle.ee/ckfinder/userfiles/files/38928569862.pdfIn PDF document text
- http://teewer.mn/ckfinder/userfiles/files/96117002499.pdfIn PDF document text
- https://walnutcreekguide.com/wysiwygfiles/file/wideluwazujawepina.pdfIn PDF document text
- http://pmdrecycling.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613baa4e68b8a---sigonawinatat.pdfIn PDF document text
- http://perfectionistpaintingnj.com/ckfinder/userfiles/files/wirumisovurexurodikured.pdfIn PDF document text
- https://catwalkdogcome.com/editor_upload_image/file/tovuvipumipo.pdfIn PDF document text
- https://badanie-wody.pl/galeria/file/93720851504.pdfIn PDF document text
- http://apicn.net/upload/files/runejibirixibutoji.pdfIn PDF document text
- http://stroyindustry.com/userfiles/file/99092403771.pdfIn PDF document text
- http://reichspfarrer.sk/file/55551649207.pdfIn PDF document text
- http://rkmaster.ru/uploads/files/68774011187.pdfIn PDF document text
- http://eot.mn/uploads/userfiles/files/reremajepopaxew.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_off0000e24a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE24A | 17252 bytes |
SHA-256: 434779bb9ab744bdec3175060e68002518feb4647d90bf07042d9053dce5bdc7 |
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font_01_sfnt_off00010f13.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10F13 | 10392 bytes |
SHA-256: c1bcbe015e02e969f5a193e4bf7ff69634ab2ab6597c283c646568f51b7648e4 |
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font_02_sfnt_off000126b7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x126B7 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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