MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. It contains numerous embedded URLs that point to compromised CMS uploads and disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of these links and the overall structure indicate a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9978
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://pistant.ru/uplcv?utm_term=myomectomy+and+c+section PDF link annotation
- https://petikdaun.com/contents/files/21765790288.pdfIn PDF document text
- http://studioschicchi.eu/userfiles/files/39949390044.pdfIn PDF document text
- https://event-connections.net/wp-content/plugins/formcraft/file-upload/server/content/files/1610deff6268cf---gojuru.pdfIn PDF document text
- https://www.cibaospalaser.com/wp-content/plugins/super-forms/uploads/php/files/d04d89vl4l38e7se6j9sh2q10o/36196555485.pdfIn PDF document text
- https://tvmreza.tv/ckfinder/userfiles/files/zojaruwesubetokatoviza.pdfIn PDF document text
- https://bbgpiti.com/userfiles/files/52417312549.pdfIn PDF document text
- http://pivotal-technologies.com/userfiles/file/52343542293.pdfIn PDF document text
- http://allseasonsart.com/uploads/fck_uploads/file/43985514198.pdfIn PDF document text
- http://qianlong99.org/ckfinder/userfiles/files/vozugufivimizezenezu.pdfIn PDF document text
- https://cls-toronto.com/wp-content/plugins/super-forms/uploads/php/files/acb57ac494888a6f31fc0ce403948af0/xejekepexerunitokofigeta.pdfIn PDF document text
- http://www.drop-lok.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612e78ee5b9e3---2964326478.pdfIn PDF document text
- https://patriot.ch/wp-content/plugins/super-forms/uploads/php/files/ksdqn2ig77856v47f830g6rk8n/jimaregezajibatunobekafa.pdfIn PDF document text
- http://sictombbi.fr/ckfinder/userfiles/files/tuxani.pdfIn PDF document text
- http://burragebrothers.net/demo/jolie/beta/userfiles/files/36155551309.pdfIn PDF document text
- https://www.hinogas.com/wp-content/plugins/super-forms/uploads/php/files/49bk49vfhihijbfi02uqr7337n/vonamelemoxabevovupake.pdfIn PDF document text
- http://projectbudapest.hu/wp-content/plugins/formcraft/file-upload/server/content/files/16080f6cbb05c4---66935359777.pdfIn PDF document text
- https://www.mozartcantat.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16089be158d80b---62128339208.pdfIn PDF document text
- http://localhomesales.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160771c23d1972---53431309978.pdfIn PDF document text
- https://hopclickhospitality.com/scgtest/team-explore/uploads/files/92027687845.pdfIn PDF document text
- https://aldea.work/wp-content/plugins/super-forms/uploads/php/files/33a85b4c91cc23aa5bab0460cba531cc/favenotomoxufugazafeva.pdfIn PDF document text
- http://www.guaitoli.eng.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a74ae60beee---wodanokidorik.pdfIn PDF document text
- http://vivaldiskibus.com/FileData/ckfinder/files/20210825_524A0D9A9C65EAA4.pdfIn PDF document text
- http://asiavent.com/UserFiles/file///47570132501.pdfIn PDF document text
- http://pulsrmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/16099c22e8fe90---85896806933.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_off0000e7f4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE7F4 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0001000b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1000B | 10492 bytes |
SHA-256: 4073bf4eda628db0ac88a9618acc58827bd097b2b8e25d87a289b05969e0a89e |
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font_02_sfnt_off000117ed.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x117ED | 16108 bytes |
SHA-256: 73f8d7d88d18d1a2e0174252faafec859fe2a027305558e3c7d8559d1e619431 |
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