Malware Insights
The file was detected as a malicious PDF by ClamAV and an ML classifier. It contains numerous embedded URLs, many of which point to PDF files on various domains, suggesting a link farm or redirection mechanism. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic indicates a potential attempt to obscure the true destination or spread malicious links across many domains. While no scripts were explicitly extracted, the nature of the embedded URLs and the detection as a phishing trojan strongly suggest an intent to redirect users to malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
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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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.ojchamber.com/ckfinder/userfiles/files/74687318651.pdf In PDF document text
- https://www.institutvzdelavani.cz/files/mavemolezaburorozeroko.pdfIn PDF document text
- https://rotterdampools.com/contents/files/91045190349.pdfIn PDF document text
- https://a2designbg.com/userfiles/file/96431812096.pdfIn PDF document text
- https://tomas-music.com/contents/files/23636083209.pdfIn PDF document text
- http://productinfo.in/konadnew/userfiles/file/vunima.pdfIn PDF document text
- https://www.lipfish.no/wp-content/plugins/formcraft/file-upload/server/content/files/16150b68675f0c---nixabelozivudositesosesa.pdfIn PDF document text
- https://luxurybaths.marblobaths.ph/app/webroot/img/files/36639365437.pdfIn PDF document text
- https://alebusph.centralcms.cloud/galeria/files/9224339096.pdfIn PDF document text
- https://enkaotomatikkapi.com/depo/sayfaresim/file/zonejafopurokomeribo.pdfIn PDF document text
- http://wernitznigg.at/files/kodev.pdfIn PDF document text
- http://sun-eko.eu/files/file/poxun.pdfIn PDF document text
- http://www.stemcellhairclinic.com/files/files/migiturifirizelave.pdfIn PDF document text
- https://classykitchen.pl/web/uploads/files/65577503652.pdfIn PDF document text
- http://anhuizpyy.com/upload_fck/file/2021-9-16/20210916072529996296.pdfIn PDF document text
- https://euroquimicadistribucion.com/zabaleta/data/imagenes_contenidos/file/fatezedofujizani.pdfIn PDF document text
- https://bevillelecomte.com/ckfinder/userfiles/files/84011369878.pdfIn PDF document text
- https://confidence-ist.com/ckfinder/userfiles/files/44610490974.pdfIn PDF document text
- https://wisestudentz.com/userfiles/file/revagebufu.pdfIn PDF document text
- http://dreesmann-foto.de/userfiles/file/71347616880.pdfIn PDF document text
- http://nuocmambason.com/upload/fckimagesfile/f86b8c35b08aa1531eb46662ddc640be.pdfIn PDF document text
- https://dichocungtoi.com/userfiles/file/datofapimojetigasola.pdfIn PDF document text
- http://scandirent-new.ru/uploads/assets/file/nikulu.pdfIn PDF document text
- http://askort.pl/Upload/file/92627674853.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/ngfLrbzwjls/uplcv?utm_term=ox+used+for+ploughingPDF 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_off0000b479.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB479 | 10744 bytes |
SHA-256: c95b21af66bfbc7e7c04adf02dd3597b0d87a982d1fac0b83dc4aab7d1e90f6b |
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font_01_sfnt_off0000cce6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCCE6 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000e4f8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE4F8 | 16296 bytes |
SHA-256: c7d2273189fcb3f2b1e0104ef11417888f7d57e3e7459736233ee76a1ca00601 |
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