MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. It contains numerous links, many pointing to compromised WordPress sites, suggesting a link farm used for phishing or distributing further malware. The presence of embedded URLs and the nature of the heuristics strongly suggest this PDF is part of a phishing campaign, likely delivered as a spearphishing attachment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9951
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://www.themeshcowork.com/wp-content/plugins/super-forms/uploads/php/files/e3f4b86ef363049a589dd622a0439c57/62647139733.pdf In PDF document text
- https://macleanpinesdrivingschool.com.au/wp-content/plugins/super-forms/uploads/php/files/ebadf3bcb97b7612e48f8d07c661a698/sajufunuruxi.pdfIn PDF document text
- https://adm.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/c51046bfe0839a119ab2603c5d677abf/negepelanaxebelis.pdfIn PDF document text
- https://visionbrindes.com/admin/fckeditor/userfiles/file/68030955128.pdfIn PDF document text
- http://ongnuocdenhat.com/upload/files/70676145201.pdfIn PDF document text
- http://www.linkkorea.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/160c2e34b769f2---soxuveju.pdfIn PDF document text
- https://standardpromotion.com/images/upload/userfiles/files/bozunawagabuwipuzu.pdfIn PDF document text
- http://plenaadoracao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a0ec17f311f---10712778115.pdfIn PDF document text
- https://flycam.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/16085b15052532---75664381409.pdfIn PDF document text
- https://pabausa.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607b1c1c0dc49---nopewib.pdfIn PDF document text
- https://sheenabusesandcoaches.com/userfiles/file/tapadarogifuf.pdfIn PDF document text
- https://saftanton.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1607779ef89059---62250476720.pdfIn PDF document text
- http://md-servicios.com/userfiles/file/8823582134.pdfIn PDF document text
- http://venusland.vn/app/webroot/img/files/wazukelozutuvarilirusoxet.pdfIn PDF document text
- http://www.stratcareerservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b78c66dc160---70169221429.pdfIn PDF document text
- https://sancarspune.com/wp-content/plugins/super-forms/uploads/php/files/127ceb4dee3d55717408d17f9dc04610/32708752109.pdfIn PDF document text
- http://mim2010.ru/userfiles/file/jobile.pdfIn PDF document text
- http://sergey-yushkov.com/pict/file/46660484968.pdfIn PDF document text
- http://www.loockuniformes.com.br/home/wp-content/plugins/formcraft/file-upload/server/content/files/1608048a4e0d5d---wuxuzonomipigokizevu.pdfIn PDF document text
- https://deewo.de/wp-content/plugins/formcraft/file-upload/server/content/files/16076c96b3e332---91884591304.pdfIn PDF document text
- https://wpsqld.com.au/wp-content/plugins/super-forms/uploads/php/files/725a1f7c880aad68da068bdbd34d5ec5/gixisunufiwid.pdfIn PDF document text
- http://www.celso.org/download/97118342859.pdfIn PDF document text
- http://paymentsbusiness.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160b5479ab2694---dinekobe.pdfIn PDF document text
- https://goodluckfishing.com/ckfinder/userfiles/files/dapegav.pdfIn PDF document text
- http://kursadowicz.pl/Upload/file/16099907612.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/6naE_Nh8_CY/uplcv?utm_term=sync+ical+and+outlook+calendarPDF link annotation
- 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_off0000e7d8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE7D8 | 17464 bytes |
SHA-256: 6243c5f3cb1f392fae6513f2f1160a8bac818ba25c8e3a1741a1dab273be6813 |
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font_01_sfnt_off000115ee.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x115EE | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00012e05.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12E05 | 10576 bytes |
SHA-256: c1fd374f0c0f439b180ef95c6a24408086b45e2d1bc4b918ca5d880e1e5735fd |
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