MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF file that contains numerous links to external websites, many of which are hosted on compromised or disposable domains. The heuristic firings indicate that this PDF is part of a link farm designed to redirect users to potentially malicious content, likely phishing pages or further malware downloads. The ML classifier and ClamAV detection strongly suggest malicious intent, classifying it as a phishing trojan.
Machine Learning
- Nyx PDF Classifier malicious score 0.9947
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://oniceh.ru/uplcv?utm_term=combine+my+pdfs PDF link annotation
- http://sbstroy53.ru/img/files/15579925421.pdfIn PDF document text
- http://trenermichal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1607e05300061f---gifafijiwetog.pdfIn PDF document text
- http://limoride.net/gallery/file/liwuxomafepelomok.pdfIn PDF document text
- https://kachhiproperties.com/wp-content/plugins/super-forms/uploads/php/files/h5qfjhsasktrkpemb6pr65kl20/worezupu.pdfIn PDF document text
- https://ewms.vn/wp-content/plugins/super-forms/uploads/php/files/c36f651ols6vk649qqibe95acp/27503508176.pdfIn PDF document text
- http://rufullthrottle.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082497d3b0e3---38549239892.pdfIn PDF document text
- https://kurishupally.org/userfiles/file/98516331349.pdfIn PDF document text
- https://dongytueduc.com/wp-content/plugins/super-forms/uploads/php/files/027djfo7jn58eoiu0kg02omm2v/10423890257.pdfIn PDF document text
- http://3handseg.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b3b837cb57---toxomax.pdfIn PDF document text
- https://ketgate.eu/wp-content/plugins/super-forms/uploads/php/files/157f96bc2047b7dd8f5dc1087491445d/winefavasilodujiz.pdfIn PDF document text
- https://munord.com/wp-content/plugins/super-forms/uploads/php/files/088cbfc285b8b55efc31f1b10014e07f/bikapupusesalasuwepiv.pdfIn PDF document text
- http://caopump.com/admin/userfiles/file/garetatotozavanodovuju.pdfIn PDF document text
- https://www.infratechgroep.nl/wp-content/plugins/super-forms/uploads/php/files/dc02d5ad5f8297d21f10d2b7aae0db7a/pivopujojidaruligoligisid.pdfIn PDF document text
- https://www.bouwenaaneensterkwerkgeversmerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160a15bde7a9a0---29968164749.pdfIn PDF document text
- http://stlukesmn.org/clients/17773/File/34326445501.pdfIn PDF document text
- https://stpeterscbs.ca/ckfinder/userfiles/files/regixiniw.pdfIn PDF document text
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ba7dc557d95---bipopitezidog.pdfIn PDF document text
- https://jdbailbonds.com/wp-content/plugins/super-forms/uploads/php/files/5be73ff298551892ce5a09f2d2ae2802/gitodefusalipebop.pdfIn PDF document text
- https://xn----9sbccjdbca7cyaieg1a3j.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/a6be2d58f6a008b62dbf1bd5482ac34f/7121206981.pdfIn PDF document text
- https://goldenparadisestsimons.com/wp-content/plugins/super-forms/uploads/php/files/96bd66f62bf3b4c445a756f52a57c7dd/48071939426.pdfIn PDF document text
- http://xn--42-6kcdlkbomh7beggito5p.xn--p1ai/userfiles/file/wosinuvenetibobedus.pdfIn PDF document text
- https://atl-50.com/files/file/jaxalokuse.pdfIn PDF document text
- http://live-lessons.net/lcj/web/uploads/assets/file/52252255132.pdfIn PDF document text
- http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ac9aca5072---21810705906.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_off0000f5e1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF5E1 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off00010df8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10DF8 | 10540 bytes |
SHA-256: 982497f83c85a68d8704bbcd63a9750329cb4973724d1e0f13b9643257e068c8 |
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font_02_sfnt_off000125bb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x125BB | 18084 bytes |
SHA-256: 6e169053d5077cd2db5505e8e47062dffdb36ef45db0aea2fec59e265d639540 |
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