MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, directing users to numerous external URLs, one of which is `https://zajinet.ru/award?keyword=prefixes+suffixes+worksheet+pdf`. The presence of multiple external links and the PDF_SEO_LINK_FARM heuristic suggest this document is designed to drive traffic to other sites, potentially for phishing or SEO spam.
Machine Learning
- Nyx PDF Classifier malicious score 0.9996
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://zajinet.ru/award?keyword=prefixes+suffixes+worksheet+pdf PDF link annotation
- https://cdn.sqhk.co/zepipawetopi/ghbAIjh/33917489016.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4480590/normal_603c55f2e671f.pdfIn PDF document text
- https://betivaronapan.weebly.com/uploads/1/3/5/3/135350750/fikopelaniwuf.pdfIn PDF document text
- https://cdn.sqhk.co/suxavawudomo/Aifhjao/58496324194.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4467322/normal_6043f9e752b6e.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4420441/normal_5fe808ff43bd2.pdfIn PDF document text
- https://fipogelijemebu.weebly.com/uploads/1/3/1/3/131398193/febozanerupati.pdfIn PDF document text
- https://dudazesulibo.weebly.com/uploads/1/3/4/6/134639231/66ed5.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4420019/normal_5fda41b799fbc.pdfIn PDF document text
- https://cdn.sqhk.co/dasadogiso/6hgfjm4/31647437959.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4425010/normal_5febfb87b7299.pdfIn PDF document text
- https://cdn.sqhk.co/tajaketo/611Bhd4/healthy_vegetarian_snacks.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4473359/normal_5fdbabafe8a53.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://667b589a-70dd-4c78-a03f-47f6e9f07b1f.filesusr.com/ugd/db80c5_25a66b488d254b25908e2baeed711c29.pdf?index=trueIn PDF document text
- https://1b15a19f-c8c2-4d9d-8c2f-e97aa7ecfe2c.filesusr.com/ugd/eb6c48_27b55affe3914167b26e383b0faf2935.pdf?index=trueIn PDF document text
- https://fdb4f28e-c637-431f-967d-457feef73efb.filesusr.com/ugd/cf5aa9_aa7391a0e6cd4dbeb90956b5a9d1f705.pdf?index=trueIn PDF document text
- https://9d50af6f-dbf7-41ba-b854-83985329a12b.filesusr.com/ugd/33c377_0d293a76310c47b3b66373299c660f30.pdf?index=trueIn PDF document text
- https://5e024257-ca51-40df-b6b5-a3104c7b7124.filesusr.com/ugd/97368a_bab72df9c3e0493f991e8653b6fe1551.pdf?index=trueIn PDF document text
- https://f421159b-d329-41e8-bc42-072bc93e4c50.filesusr.com/ugd/65d6f7_3fe4c07078b84b39b0e0fe7b466f94cb.pdf?index=trueIn PDF document text
- https://9579f988-9383-433c-acf3-5fff76e0c882.filesusr.com/ugd/191a6d_ef50ecb45f1d49a5a62069c3cf84e0e7.pdf?index=trueIn PDF document text
- https://4454cc88-256b-48ad-9013-c0414c72072d.filesusr.com/ugd/67e251_1de88bd2579d4ee7a36bb46804709bd5.pdf?index=trueIn PDF document text
- https://1ce8651a-bfbb-4b9a-b1bf-24b3b574775a.filesusr.com/ugd/ac72e0_7ac5f348d0a142d9946dac893ebfca6a.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_off0000f66d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF66D | 5112 bytes |
SHA-256: 9a7141b97f2e154be790a7ce8d1362ad7f5ce84a9eae2c4afb8c709635447355 |
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font_01_sfnt_off000107e9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x107E9 | 10376 bytes |
SHA-256: 847ded065c31871a9a86cfb5c8c8fc28846d30520fc9c27c935d8b603d33df9f |
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