MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous URLs that form a link farm, with several pointing to compromised WordPress sites, suggesting a phishing or malware distribution scheme. The presence of PDF-specific heuristics like 'PDF_SEO_DISPOSABLE_LINK_FARM' further supports this attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9973
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://catamma.ru/uplcv?utm_term=plane+geometry+book+pdf PDF link annotation
- http://elliptical-trainers.ru/ckfinder/userfiles/files/rujok.pdfIn PDF document text
- http://kelsenator.com/userimages/23834692021.pdfIn PDF document text
- https://alshuka.ps/ckfinder/userfiles/files/xapikizubanapategikijiro.pdfIn PDF document text
- https://maritime-models.com/userfiles/file/ruxege.pdfIn PDF document text
- http://madonnina.info/userfiles/files/22193778357.pdfIn PDF document text
- http://balcimimarlik.com/resimler/files/jomosolilas.pdfIn PDF document text
- http://tks-forever.com/upload/2021/09/01/file/jaburovaxikowekotuxiluf.pdfIn PDF document text
- http://caacoding.net/wp-content/plugins/formcraft/file-upload/server/content/files/161324eee13789---kokifojiditemakilirolug.pdfIn PDF document text
- http://www.sarajevo-inn-grunewald.com/wp-content/plugins/formcraft/file-upload/server/content/files/16137bc93c70b4---pumuzobup.pdfIn PDF document text
- http://taxicityplus.ru/userfiles/file/zijuzivazogi.pdfIn PDF document text
- http://kayapalinakliyat.net/file/zikow.pdfIn PDF document text
- http://www.fotografoeventimilano.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613667810be1d---16659428694.pdfIn PDF document text
- http://wdnederland.nl/file/37387375858.pdfIn PDF document text
- http://kronikarp.pl/ckfinder/userfiles/files/6931334444.pdfIn PDF document text
- http://msslink.ru/userfiles/files/diposapulufake.pdfIn PDF document text
- https://dgaspcsm.ro/ckfinder/userfiles/files/17203479506.pdfIn PDF document text
- https://przygodanaukrainie.pl/admin/ckfinder/userfiles/files/63180129390.pdfIn PDF document text
- http://radissonhoteltraining.com/userfiles/file/28891409336.pdfIn PDF document text
- http://harmonie-avion.fr/actualite/files/18591805087.pdfIn PDF document text
- https://rireenfrance.com/images/upload/files/lisanapaluli.pdfIn PDF document text
- http://pk.mo/userfiles/file/62179741381.pdfIn PDF document text
- http://vpsystem.com/files/fck/pekogefixawafomar.pdfIn PDF document text
- https://limsurdua.com/contents/files/23906735090.pdfIn PDF document text
- http://decom.pro/admin/ckfinder/userfiles/files/larexevoji.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_off0000bcd4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBCD4 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000d4e6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD4E6 | 16000 bytes |
SHA-256: f3516ec16e980866853ef3a1e1d93496e03a1949e3b75470f7cf2d54bdf9bd52 |
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font_02_sfnt_off0000fdec.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFDEC | 10928 bytes |
SHA-256: 75bf4676826722e893fa394cf23a063a2de3d385e067dcefa9c450d7ef849cf9 |
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