MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm or SEO spam operation. The embedded content, though obfuscated, likely serves to redirect users to malicious sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9996
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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=exercicios+resolvidos+analise+combinatoria+pdf PDF link annotation
- https://cdn-cms.f-static.net/uploads/4376875/normal_5fe94dbaca051.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4469633/normal_604e04a048cd3.pdfIn PDF document text
- http://lasleymarkt.ru/bass_boosted_music8c3uf.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4484610/normal_5ff9498dab0d3.pdfIn PDF document text
- http://pipvip.ru/ruxizb9bx8.pdfIn PDF document text
- http://gatorama.space/59533196949rdwcz.pdfIn PDF document text
- http://lnstagram-blue-ticks.com/bose_wave_music_system_iii_remote_ukqkzkm.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4377656/normal_604d67e3e3e0c.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://17a6c5a8-0587-4adf-8126-5b439e15a62f.filesusr.com/ugd/54bec1_61d571b229cf46c893f8f71ba576e61d.pdf?index=trueIn PDF document text
- https://ec679cc6-872a-45a8-b2fd-b1bc8f6ddb77.filesusr.com/ugd/d1d005_939a8a78fb7a4300b57a5f2b1a699c94.pdf?index=trueIn PDF document text
- https://09972071-4174-499b-90b1-de3619f59f53.filesusr.com/ugd/d1c05f_df55cfcaeb8f4630a382bc546a51e92f.pdf?index=trueIn PDF document text
- https://c01188fd-d8af-4b86-846b-090f7ecd58d8.filesusr.com/ugd/9058e5_16f4392a74bd44ed97bc037268e7cde6.pdf?index=trueIn PDF document text
- https://9526c93a-d340-4dca-b5fd-2864ff0888c4.filesusr.com/ugd/4c3d6a_84d1d4e3ca564ebb9662cd456c5c858b.pdf?index=trueIn PDF document text
- https://4abf464d-34d5-4c80-8de5-e64f30e04530.filesusr.com/ugd/8b3eb5_d843f456529f4958a51f6561045b3199.pdf?index=trueIn PDF document text
- https://0298dc5a-7924-4276-8279-06452a5288da.filesusr.com/ugd/b30cf0_d7affb64895742609618e4d60993c947.pdf?index=trueIn PDF document text
- https://4647adb0-9c01-46a1-aef1-4380d5873f13.filesusr.com/ugd/edb4a7_b0165e824da949af9f525d5187b2eda0.pdf?index=trueIn PDF document text
- https://37e79482-e567-4eff-b449-6ea9b90d4679.filesusr.com/ugd/cff0cd_07b75cd158c24e7fb407ce6006190f72.pdf?index=trueIn PDF document text
- https://6a24fdd2-d4a5-4c4b-882b-0f3115751bcf.filesusr.com/ugd/04e6f9_f54f1b4834aa4946a0fa4ac15291dd22.pdf?index=trueIn PDF document text
- https://a9f3490c-def6-45ea-9957-aefa341d54bd.filesusr.com/ugd/84b587_dc25c04186924bfa9a0a78767eff4de5.pdf?index=trueIn PDF document text
- https://b304dada-1952-41b2-af44-d16a3232bb3f.filesusr.com/ugd/c19c34_a827d979fe0f4b92b6673ea7fe56a9ad.pdf?index=trueIn PDF document text
- https://77bac38d-831a-46d6-8f22-d7743fcadc58.filesusr.com/ugd/5b9a87_ec9ca96554824a52b3ea5cd2f507c670.pdf?index=trueIn PDF document text
- https://55f5e71c-5f54-469f-9449-301c43944234.filesusr.com/ugd/bbdb65_d51180eb89f54ff5b27e65139dc1e387.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_off0001245d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1245D | 5528 bytes |
SHA-256: 199d740aecb6524bd8ee542cd763ad66968ae6eafff55db49abab9fab6ac8162 |
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font_01_sfnt_off0001371c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1371C | 10360 bytes |
SHA-256: 4779d6e2bf75c9ad9346235649dc69c8e1f6296ba94a704ec4eec06875388aa1 |
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