MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF file flagged by ClamAV and an ML classifier as malicious. It contains numerous external URIs, many of which are part of a link farm on disposable hosting, suggesting a phishing or malware distribution scheme. The PDF structure and embedded URIs indicate it's likely used as a lure to redirect users to malicious websites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9951
Heuristics 5
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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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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://ketchas.ru/uplcv?utm_term=legendre+differential+equation+series+solution+pdf PDF link annotation
- https://ice-group.pl/userfiles/file/donogibawifuzuruboxud.pdfIn PDF document text
- https://xyoaa.org/sites/default/files/files/tuvujogogikilof.pdfIn PDF document text
- https://soportedevida.mx/ckfinder/userfiles/files/fesupusamidelidumen.pdfIn PDF document text
- http://xn--jt2b56wn0ap2a.com/upload/file/202109051117032999.pdfIn PDF document text
- http://sys-svinding.dk/userfiles/file/2182682371.pdfIn PDF document text
- https://areshin.ru/wp-content/plugins/super-forms/uploads/php/files/766b90d3202fe30472e7b2faf35dfc67/pigafu.pdfIn PDF document text
- http://motolargo.pl/userfiles/file/59018461064.pdfIn PDF document text
- http://amongelite.com/ci/userfiles/files/rufutiteko.pdfIn PDF document text
- http://designgaleria.hu/userfiles/file/tipapalivosatipopi.pdfIn PDF document text
- http://expertworker.paraleumarian.ro/app/webroot/files/userfiles/files/13271461644.pdfIn PDF document text
- http://stomerijindex.nl/images/uploads/41726081819.pdfIn PDF document text
- https://albawadiroad.com/userfiles/files/dikodanufagotaxonap.pdfIn PDF document text
- http://4bx.pl/public/file/ditivabevovoxakaxa.pdfIn PDF document text
- http://leguido.net/files/13007051639.pdfIn PDF document text
- http://abwrosedale.com/uploads/files/673550353.pdfIn PDF document text
- http://okna-dvere-online.cz/media/upload/upload/file/nubojirigekepinadeneriva.pdfIn PDF document text
- http://way-of-spirit.ru/upload/file/24505592675.pdfIn PDF document text
- http://trevorhannant.com/4389505712.pdfIn PDF document text
- https://saleskerala.com/ckfinder/userfiles/files/galave.pdfIn PDF document text
- http://rklatex.com/userfiles/file/raroxomenadafanubazitab.pdfIn PDF document text
- http://markasib.ru/ckfinder/userfiles/files/wawosizisidelofutamigenew.pdfIn PDF document text
- https://divinenine.net/userfiles/file/7434555483.pdfIn PDF document text
- http://studioferrato.it/userfiles/files/kazuvek.pdfIn PDF document text
- http://pixel-pro.ru/upload/file/xajofonirizidopip.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_off0000bd02.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBD02 | 10876 bytes |
SHA-256: 787363fa879bc179d11549c48a6d08242ba33dcae25f7391dcab3a4c7afdf586 |
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font_01_sfnt_off0000d5b0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD5B0 | 17176 bytes |
SHA-256: c5a8a020c6cf55fc3dafd7652f279c54894028684705601512fa09c77ab3dc51 |
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font_02_sfnt_off000101fa.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x101FA | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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