MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains numerous embedded URLs, many of which point to compromised WordPress sites or disposable hosting, indicating a link farm designed to distribute malicious content. The ClamAV detection and ML classifier strongly suggest a phishing or trojan payload is intended. No scripts were extracted, but the primary attack pattern is the use of malicious links within the document.
Machine Learning
- Nyx PDF Classifier malicious score 0.9977
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://cructi.ru/uplcv?utm_term=cours+de+recherche+operationnelle+gratuit+pdf PDF link annotation
- http://lachina.cn/upload/file/wiwexopefexon.pdfIn PDF document text
- https://smartmedia.ro/app/webroot/files/userfiles/files/6717988270.pdfIn PDF document text
- http://www.supercarrentalsofmiami.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b3c2ad5cd60---pojinuzurisukivunisasuz.pdfIn PDF document text
- http://uteambio.com/upload/files/gawuzifedo.pdfIn PDF document text
- http://monterroso-construpuntos.com/campannas/file/tobobumevelosizi.pdfIn PDF document text
- https://bojovicsirogojno.com//files/xanigiv.pdfIn PDF document text
- http://arcstema.com/userfiles/files/62410523713.pdfIn PDF document text
- http://www.akutrans.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b34366d085---6627408683.pdfIn PDF document text
- http://insightonafrica.in/userfiles/file/87051953935.pdfIn PDF document text
- http://gartenstadt-apotheke.com/userfiles/file/41972217039.pdfIn PDF document text
- http://smflow.in/admin/uploads/file/tenipe.pdfIn PDF document text
- https://larrialdiak.es/files/galeria/files/sasorudapisuverodolelokis.pdfIn PDF document text
- http://boulderdivorcelaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f3790d1b4bc---74993135378.pdfIn PDF document text
- http://hrzservices.com/uploadfiles/file/87144537944.pdfIn PDF document text
- http://skrabl.pl/www/rpbd/fck/file/60919033828.pdfIn PDF document text
- https://mygamedaysports.com/wp-content/plugins/super-forms/uploads/php/files/b31d540fb832e5882010f74cb6c772f0/veduxe.pdfIn PDF document text
- http://adirondackseafood.com/ckfinder/userfiles/files/wegebigixakojumuwubat.pdfIn PDF document text
- http://www.papelerialapiceros.es/ckfinder/userfiles/files/repakokuvurugimitezesi.pdfIn PDF document text
- http://gpe-el.pro/ckfinder/userfiles/files/likomuri.pdfIn PDF document text
- https://air-separation-supplier.com/d/files/fozalizarofujirunibanuz.pdfIn PDF document text
- http://xn--80aaa1acmiejxr6d7fg.xn--p1ai/data/files/lawitulow.pdfIn PDF document text
- http://ingpiazza.eu/userfiles/files/81598800406.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_off000103ba.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x103BA | 24436 bytes |
SHA-256: 677043f8c867ebf51ce16ae10d5ebcae5f4940faa9914d9cbe2250c9bb136eac |
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font_01_sfnt_off00014011.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14011 | 11028 bytes |
SHA-256: 380263a6017f84033a51b479bd54be6c2994e678465a88ccc53af26143eaecf0 |
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font_02_sfnt_off0001597e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1597E | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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