MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links to external websites, many hosted on compromised CMS platforms, suggesting a link farm designed to redirect users to malicious content. The document body, though heavily obfuscated, contains text related to 'certificate of recognition' and 'wkhtmltopdf', indicating a lure to disguise the malicious intent.
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://infrive.ru/uplcv?utm_term=certificate+of+recognition+sample+text PDF link annotation
- http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/160965fe9d3aa9---kojifawovoferotivipifagu.pdfIn PDF document text
- https://www.mysmilestudios.com/wp-content/plugins/super-forms/uploads/php/files/c4dadb87c8c796b625cc77313f1850bf/rulolezunigokedidakajo.pdfIn PDF document text
- http://mastera-mix.ru/ckfinder/userfiles/files/50550588307.pdfIn PDF document text
- http://alisawedding.com/upload/users/files/zasabajilexapa.pdfIn PDF document text
- https://hondamienbac.vn/userfiles/file/43200823523.pdfIn PDF document text
- https://t2sc.me/userfiles/wexenosekiduwe.pdfIn PDF document text
- http://www.191seo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f7cc474bfa---geditutomuterofiwab.pdfIn PDF document text
- https://hotelristorantenovecento.it/wp-content/plugins/super-forms/uploads/php/files/07452e09571fcfbedaf8ef7cfd98ada9/99047341549.pdfIn PDF document text
- https://utilitydiscount.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab6ba3bd947---22545720249.pdfIn PDF document text
- http://es-umzuege-transporte.de/wp-content/plugins/super-forms/uploads/php/files/411717b206eebbc56a94a8de51693dae/xebitogozaba.pdfIn PDF document text
- http://xn--80ackbssfuieecff0e8c.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/5n2t9snptph5nrcd2mru922cc4/72111876283.pdfIn PDF document text
- http://ixtvs.de/_upload_bilder/_filemanager/file/lofafitadunep.pdfIn PDF document text
- http://bahtiyardishekimi.com/fckfiles/file/zafiduwajuvujuwexi.pdfIn PDF document text
- https://www.modianodesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a773e1210cf---84098834213.pdfIn PDF document text
- https://arredamentigiacobbe.it/file/68152031802.pdfIn PDF document text
- https://alfa-clining.ru/wp-content/plugins/super-forms/uploads/php/files/8a8c4cd96a345eed69b7bb1edd359333/12344088564.pdfIn PDF document text
- http://www.realisthotel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c7be59a0054---zalozuzigowexajo.pdfIn PDF document text
- http://anatolianlgs.com/userfiles/file/14871300987.pdfIn PDF document text
- http://brenna-ski.pl/userfiles/file/63268206351.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn 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://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000f678.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF678 | 5308 bytes |
SHA-256: fccacad6b12cffbf28f48f22bf27a6238aae0e2181477601e58714a66f19f513 |
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font_01_sfnt_off00010876.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10876 | 10340 bytes |
SHA-256: 3cf95f43b79cf4827799af24edeef34613cab762e92d5208b012ca0ba46e2929 |
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