MALICIOUS
124
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file was detected as malicious by ClamAV with a 'Pdf.Phishing.Trojan' signature. Static analysis revealed it functions as a link farm, with numerous embedded URLs pointing to compromised WordPress sites and other domains, likely serving as a lure for phishing or malware delivery. The presence of external URIs and link farm characteristics strongly suggests a malicious intent to redirect users to potentially harmful content.
Machine Learning
- Nyx PDF Classifier suspicious score 0.4699
Heuristics 5
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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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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://krisoc.ru/uplcv?utm_term=rounding+off+worksheets+for+class+5 PDF link annotation
- http://sinara.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a4aa1d2c1d7---67173368355.pdfIn PDF document text
- http://daearesort.com/FileData/ckfinder/files/20210703_58CD3C525F66087A.pdfIn PDF document text
- http://anonelectronics.com/admin/fckeditor/editor/filemanager/connectors/php/upload_jpg/file/202105181202426900.pdfIn PDF document text
- http://lawyermo.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/fuzirewedi.pdfIn PDF document text
- http://www.sname.org.tw/sname/ckfinder/userfiles/files/26553179837.pdfIn PDF document text
- http://vdgairconditioning.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1611cc1ec52b35---tumosesu.pdfIn PDF document text
- http://nawooelcs.com/upload/userfiles/2021/08/files/210810020842.pdfIn PDF document text
- http://travelsi.ru/ckfinder/userfiles/files/89451624650.pdfIn PDF document text
- http://www.benvenutialmare.com/wp-content/plugins/formcraft/file-upload/server/content/files/161167b1465547---wunedewepizasuxulijopev.pdfIn PDF document text
- https://noukos.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1607280811b35a---soligaw.pdfIn PDF document text
- https://www.cr-sdc.org/wp-content/plugins/super-forms/uploads/php/files/085ba0cf91a4581209985b0abf53156f/45100467507.pdfIn PDF document text
- http://doremimarlikinsaat.com/userfiles/file/milanuroxosapidulavareje.pdfIn PDF document text
- http://lncxjzxxw.com/upload_fck/file/2021-5-25/20210525042734430020.pdfIn PDF document text
- https://greenfuturevietnam.com/Upload/files/17795464309.pdfIn PDF document text
- http://victorylimo1.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608147c467992---moxemisejol.pdfIn PDF document text
- https://voolabs.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609496f1e74c4---ketadafojagagewubipib.pdfIn PDF document text
- https://capitalsyndic.com/userfiles/file/mozezutiso.pdfIn PDF document text
- http://berallebags.com/UploadFiles/FCKeditor/20210519185815.pdfIn PDF document text
- http://perfekttorun.pl/pliki/4053459952.pdfIn PDF document text
- http://rilta.net/userfiles/files/71965412166.pdfIn PDF document text
- https://ratsimae.ee/media/contents/file/jiwusow.pdfIn PDF document text
- http://spokoino.ru/i/upload/files/muruzi.pdfIn PDF document text
- https://www.novet.de/wp-content/plugins/formcraft/file-upload/server/content/files/160bf8e31a2cbf---13853833983.pdfIn PDF document text
- http://www.melloecastro.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c4300badc1---jubegax.pdfIn PDF document text
- https://media-get.ru/userfiles/files/51549389301.pdfIn PDF document text
- http://dh-cell.com/ckfinder/userfiles/files/52003919324.pdfIn PDF document text
- http://www.kreasoft.mx/wp-content/plugins/formcraft/file-upload/server/content/files/16105adc57b9ff---62913183668.pdfIn PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000bb3c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBB3C | 11212 bytes |
SHA-256: 8e023bf69b93f5ae6a50bd2af7cd6e2ca4b32f28c64bbb3cd30d5ae60f3e7c4b |
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font_01_sfnt_off0000d55a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD55A | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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