MALICIOUS
94
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file contains numerous links pointing to other PDF documents hosted on compromised WordPress sites. This behavior is indicative of a link farm, often used for SEO poisoning or to distribute further malicious content. While no scripts were directly extracted, the ML classifier flagged the PDF as malicious, and the presence of compromised upload links suggests a deliberate attempt to leverage these sites for malicious purposes. The primary attack pattern observed is the distribution of links to potentially harmful content.
Machine Learning
- Nyx PDF Classifier malicious score 0.7061
Heuristics 4
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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://www.digitalsofts.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610ec14c787f9---gobokovogebopapamolijej.pdf In PDF document text
- http://nena-artspace.com/ckfinder/userfiles/files/lewozadilumujilavik.pdfIn PDF document text
- http://richmore.kr/uploadfile/fckeditor/file/75074068954.pdfIn PDF document text
- http://cricalliance.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096262ec928e---24331809828.pdfIn PDF document text
- http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/7c14e5a432df37262e060c5c8fb75392/36531073671.pdfIn PDF document text
- https://comillaspostgrado.es/userfiles/file/9271441650.pdfIn PDF document text
- http://ihdbd.org/upload/files/67584370563.pdfIn PDF document text
- https://best-turbos.com/wp-content/plugins/super-forms/uploads/php/files/afea300b9ab050cbf173e1bb9825894f/pilifumagikinera.pdfIn PDF document text
- https://manenshop.com/upload/files/4229847659.pdfIn PDF document text
- http://www.saraviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160761fea9773a---menukabipanogorixu.pdfIn PDF document text
- https://canadiancontractorservices.com/wp-content/plugins/super-forms/uploads/php/files/3bqig0gecv0ltd4vtd29fptpg4/28813036476.pdfIn PDF document text
- http://photonart.nl/phpcmsys/file/zajotezizid.pdfIn PDF document text
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a096102eb8f---fifurikolilabisojo.pdfIn PDF document text
- https://markmont.eu/editor_uploads/system/files/nakejal.pdfIn PDF document text
- https://k-kompany.ru/wp-content/plugins/super-forms/uploads/php/files/167bdcadd9b1ab67ce3f2eaeef646502/pibumebipapukizetew.pdfIn PDF document text
- https://spiuruguay.com/ckfinder/userfiles/files/15860768584.pdfIn PDF document text
- http://educasters.co/ckfinder/userfiles/files/56557023823.pdfIn PDF document text
- http://amindoost.ir/images/upload/files/16966141837.pdfIn PDF document text
- http://www.zywawiara.pl/pliki/41521405450.pdfIn PDF document text
- https://camile.vn/wp-content/plugins/super-forms/uploads/php/files/fu5nt2helkvj43gfqm9g65dkqu/31073169388.pdfIn PDF document text
- http://www.sempresaude.net/wp-content/plugins/formcraft/file-upload/server/content/files/160bbddbc9e687---75192201312.pdfIn PDF document text
- https://www.swissfillon.com/wp-content/plugins/super-forms/uploads/php/files/8331db288c258613dca51d3abeaca324/5505666865.pdfIn PDF document text
- http://donaldbermanmaimonidesgolf2021.com/clients/0/0d/0d43fbb8ff91cab41fa1b056c0d912a9/File/80927546300.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/fzgW7-mxBc0/uplcv?utm_term=funciones+basicas+de+excel+2016+pdfPDF link annotation
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 1
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000bf71.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBF71 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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