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. The file contains a large number of external links, many pointing to disposable hosting, suggesting a link farm designed to distribute malicious content or phish users. The presence of embedded URLs and the overall structure strongly suggest it's part of a phishing campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
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://kuzutuzo.ru/123?utm_term=limits+of+trig+functions+cheat+sheet PDF link annotation
- https://cdn-cms.f-static.net/uploads/4498997/normal_5fda58e04178b.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4460690/normal_5fcea5c9159b8.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4464851/normal_6054d04ee677c.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366395/normal_604a1ffa2cde9.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4454163/normal_604422b3ecb0e.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4451940/normal_603033537fc3e.pdfIn PDF document text
- https://cdn.sqhk.co/zimuteraf/eicR3N4/91448262537.pdfIn PDF document text
- https://cdn.sqhk.co/mojobugoge/PidhclP/simply_piano_apk_pro.pdfIn PDF document text
- https://cdn.sqhk.co/famuxina/hbiekji/long_coffin_nails_designs.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://67258aaf-84c5-4a88-bfd2-1aa7ddb6c27a.filesusr.com/ugd/850f07_543b95b9d02d48558a202796aaeeaf99.pdf?index=trueIn PDF document text
- https://0efdb04f-128a-4c0d-ace4-8b312723ebcc.filesusr.com/ugd/5508f4_26ae2ea91e5a411883714f366b5be306.pdf?index=trueIn PDF document text
- https://24218389-b518-4ca3-8548-65eaf758daa4.filesusr.com/ugd/c836c3_36652f8e9ef34a3a986ab1d604601fc0.pdf?index=trueIn PDF document text
- https://6bc61794-ec17-45f1-96eb-8bed4cd57308.filesusr.com/ugd/217b8a_d542fb022d044ae49bf7a7801c05d768.pdf?index=trueIn PDF document text
- https://6fd4412c-3e6e-4f21-a9af-8137ffc6c0d9.filesusr.com/ugd/03469c_0dd25c7b107943538aef0716c8f80c1b.pdf?index=trueIn PDF document text
- https://101c3d73-5e22-4da1-a203-a3a2a794ce88.filesusr.com/ugd/69a512_96a85aacfeb3467e9315befe3b8aacac.pdf?index=trueIn PDF document text
- https://02ee9779-94d6-4ec7-959f-c0f99fe19a35.filesusr.com/ugd/cdc607_6ab4000f87864a27b5b44376d694ec60.pdf?index=trueIn PDF document text
- https://b913155d-2712-4fd4-bcc6-651970a8c456.filesusr.com/ugd/e39924_a57eef9734844a50839bb373693404c8.pdf?index=trueIn PDF document text
- https://7e8267f5-6380-480e-ad72-df526eaefc07.filesusr.com/ugd/cbe325_62486c5b373a406e93bcca3d77e37aac.pdf?index=trueIn PDF document text
- https://d62ff7d9-aefc-4ab8-8cdf-af38868aea16.filesusr.com/ugd/54b9a1_cb294b6de8a94d2fafc3072fe5fae7ef.pdf?index=trueIn PDF document text
- https://4ec63ec4-77bf-4499-900e-7c522af20654.filesusr.com/ugd/35bdb9_8660ad46d5a8493ab8944563272c69ca.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_off0000d5c5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD5C5 | 5204 bytes |
SHA-256: 1f00d810e44696141ccabbf9faff290c3e4a7032330d797a193c672721bccc05 |
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font_01_sfnt_off0000e759.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE759 | 10256 bytes |
SHA-256: 37594837eff9d5db982e42696d05b224cd2ae7f0486224105f74ae68f679a551 |
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