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 functions as a link farm, containing numerous external URLs that likely lead to further malicious content or phishing sites. The primary URL observed is https://kuzutuzo.ru/wix?keyword=redox+titration+worksheet+with+answers, which appears to be part of a SEO-based distribution scheme.
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/wix?keyword=redox+titration+worksheet+with+answers PDF link annotation
- http://pejokepi.mywebcommunity.org/ashton_kutcher_brother_disability.pdfIn PDF document text
- http://vibigobefe.22web.org/66427001451.pdfIn PDF document text
- http://mesanezedid.mypressonline.com/linfadenitis_mesenterica_pediatria.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://d4508431-0eee-4913-ac2a-2ec907ed9b18.filesusr.com/ugd/12daa7_619e672971274a1c8feac23dfc01cbcf.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/66752115-e597-477d-a51f-29be74545ec7/36398801731.pdfIn PDF document text
- http://damaxokabipo.epizy.com/xaxidusowonafezideripiwad.pdfIn PDF document text
- http://soranodabiwegi.myartsonline.com/70169493938.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/3b0d1bb5-cec0-496e-ae62-6756e03096ad/6316838685.pdfIn PDF document text
- http://sudemididesiz.epizy.com/zitadukamexuxogo.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/c7487100-a602-46e9-a1a3-123a1a79ff24/95233218051.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/ebc94d24-229a-453a-8731-cc3d8f82b2fd/9152079456.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/b4dad7ff-8e2e-4650-8d8d-1e245b4bbcd8/81929831889.pdfIn PDF document text
- http://vumoxijesep.epizy.com/learn_japanese_language_for_beginners.pdfIn PDF document text
- http://ruruwuvatokatal.onlinewebshop.net/14687704001.pdfIn PDF document text
- http://vumigewinumuzi.epizy.com/excel_bedingte_formatierung_text_wenn_zelle_leer.pdfIn PDF document text
- https://44f39d5c-a655-4437-91b6-62b11e148e71.filesusr.com/ugd/eb4c03_2df8e2b60d5246dd8c45802ed1a3b7f4.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/c04accfa-07bd-46e1-b575-d4256462ee27/how_to_open_a_money_market_account_with_vanguard.pdfIn PDF document text
- https://507d1b22-ea03-4061-a262-f79425337ca2.filesusr.com/ugd/a374b9_2b712ae7d0c847ba9e9cb79ae1392d02.pdf?index=trueIn PDF document text
- https://76a725e8-946c-4ae9-9249-cda469d35108.filesusr.com/ugd/83c8cc_17f01e8eac9e493180670521c87367f2.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/e2497857-b9f6-4db5-80da-e0e03fd69bea/pathfinder_character_guide.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://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00010071.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10071 | 4900 bytes |
SHA-256: 53cf70ac61961e4ae7fa3767400e4bbe363e14f2e811866ac58f6dde8e0d439a |
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font_01_sfnt_off00011123.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11123 | 11140 bytes |
SHA-256: 547588a76031a26ed640e1f9f8dc8e76781694f0ff60a0e57dd2f57778207f39 |
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font_02_sfnt_off0001376c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1376C | 4324 bytes |
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e |
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