MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The sample is a PDF document that contains a large number of external links, identified as a link farm. The primary URL, https://vilenefex.ru/strik, and another linked PDF, http://aduo5.online/kendo_grid_filter_column_templatehjedh.pdf, are suspicious and likely lead to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, consistent with phishing or malware distribution via a link farm.
Machine Learning
- Nyx PDF Classifier malicious score 0.9993
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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Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARMSmall PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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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://vilenefex.ru/strik?utm_term=is+jersey+mike%2527s+gluten+free+bread+good PDF link annotation
- http://aduo5.online/kendo_grid_filter_column_templatehjedh.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4404524/normal_5fe4201fc80c5.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366308/normal_6014136c8a36a.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4445116/normal_603e395298ba6.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4485436/normal_601eebbbc2600.pdfIn PDF document text
- https://tovijivesigaz.weebly.com/uploads/1/3/5/3/135327805/07de8cb0.pdfIn PDF document text
- https://xizuxukavawot.weebly.com/uploads/1/3/4/3/134376570/pepinewixuk.pdfIn PDF document text
- http://katermore.ru/autocad_3d_drawing_mechanicalnrmh7.pdfIn PDF document text
- http://meine-gebuhrenfrei.com/240371661911a058.pdfIn PDF document text
- https://pibigetikuke.weebly.com/uploads/1/3/5/3/135387636/1485033.pdfIn PDF document text
- https://zajoralesame.weebly.com/uploads/1/3/0/9/130969459/favafosijivo_pokemi_kapepiseno_pazazuv.pdfIn PDF document text
- http://smm-target.ru/nifeguc07a2.pdfIn PDF document text
- http://cafe-cok.ru/definicion_de_titulos_de_credito_y_sus_caracteristicaso051j.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://noxagipuputop.rf.gd/judolozepufixil.pdfIn PDF document text
- https://7f06b679-e14d-4525-8955-d56a7cf6f710.filesusr.com/ugd/79e5df_596b5077466c460e8acbc035dd40bd41.pdf?index=trueIn PDF document text
- http://xefobimulekojuw.epizy.com/mumaboki.pdfIn PDF document text
- https://a4edf7fa-b057-49b5-8014-e5fd436fbef3.filesusr.com/ugd/c8b2c5_32da1323c7af4a58b246e6201c7ae218.pdf?index=trueIn PDF document text
- https://625f08e2-3d8e-45b5-8e8c-b95d001c5c7c.filesusr.com/ugd/d94ae5_2537455227164776badffb17f0db86ca.pdf?index=trueIn PDF document text
- https://7e574f8b-ef34-4833-8dee-b18f3ac9fc91.filesusr.com/ugd/af8ffd_3131bb95677941e4b7edce6dfd173c0b.pdf?index=trueIn PDF document text
- https://8acf0fc4-2da8-4686-9788-d7840b5449fc.filesusr.com/ugd/fab691_44efd3ffb4c34fa78beee3e1aefbcd87.pdf?index=trueIn PDF document text
- http://gikunipif.epizy.com/serasonosaxalobupalam.pdfIn PDF document text
- https://9e77dbea-16d6-438e-9859-4a68c5388828.filesusr.com/ugd/3225da_c7edbd0abe60485ba25b659e45ce35e8.pdf?index=trueIn PDF document text
- https://ce2645ba-e89a-43d5-afff-5c0150757291.filesusr.com/ugd/c63dba_7952722bd32d43959890dd1bd795afd0.pdf?index=trueIn 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://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00011f32.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11F32 | 5580 bytes |
SHA-256: cb26775fa84e8669ec8e74e029f837e3ecce722a808c08fdbaaaa91609a46c84 |
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font_01_sfnt_off0001322b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1322B | 11300 bytes |
SHA-256: b4c37a48ff76d84f3a0897beeeb6e6df59ed88589fccdb4d1d8d1fc2335d5645 |
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