MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains a large number of embedded URLs, many of which point to disposable hosting or redirectors, indicating a link farm designed to distribute malicious content or phish users. The presence of numerous external URIs and the 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic strongly suggest a phishing or malware distribution campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9912
Heuristics 5
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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 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://krisoc.ru/uplcv?utm_term=major+chord+triads+guitar PDF link annotation
- http://stellar.ru/ckfinder/userfiles/files/jutunazuwuzesarorinig.pdfIn PDF document text
- https://suacuacuontoanphat.com/upload/files/nipibope.pdfIn PDF document text
- https://sfeerweter.nl/userfiles/files/22561012908.pdfIn PDF document text
- https://sheenabusesandcoaches.com/userfiles/file/96548911380.pdfIn PDF document text
- https://etre-cheval.fr/Applications/MAMP/htdocs/etre%20cheval/news_pix/file/pazikibid.pdfIn PDF document text
- http://charolais-hessen.de/write/userfiles/file/83060182287.pdfIn PDF document text
- http://pferdefreunde-brueckenhof.de/sites/default/files/userfiles/file/vevukalukuvagularukexu.pdfIn PDF document text
- https://ferdavagnar.is/images/fck/file/vusokugulexolodur.pdfIn PDF document text
- https://ferest.ro/imagini_ws/90134157004.pdfIn PDF document text
- https://ou-ravda.com/ckfinder/userfiles/files/59709597483.pdfIn PDF document text
- http://hzxgdz.com/images/upload/File/97469757109.pdfIn PDF document text
- http://sozopolihills.com/userfiles/file/luxevotidagamebuwupiluwev.pdfIn PDF document text
- http://studio-orlandini.com/userfiles/files/jojabalezubif.pdfIn PDF document text
- https://christembassybarking.org/wp-content/plugins/super-forms/uploads/php/files/e9e9bb4462e0596a80e382c9c96e6e5b/8636987229.pdfIn PDF document text
- http://impressivetravelvietnam.com/upload/files/16023259268.pdfIn PDF document text
- http://xn--o79av69abka850ab6c.com/upload/file/202109060703185045.pdfIn PDF document text
- http://millecolori.it/images/file/vodetip.pdfIn PDF document text
- https://ferropula.hr/files/40542117497.pdfIn PDF document text
- http://ancheng-medical.com/uploadfile/files/duwukikuruwogipukos.pdfIn PDF document text
- https://wisestudentz.com/userfiles/file/88935764400.pdfIn PDF document text
- http://lawcab.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1613a458538af3---lesefavetitusowuto.pdfIn PDF document text
- http://ascensionchina.com/userfiles/file/bujem.pdfIn PDF document text
- http://altaprecision.com/userfiles/file/49997494833.pdfIn PDF document text
- http://babijie.com/upload_fck/file/2021-9-16/20210916040306744664.pdfIn PDF document text
- http://medicalproduct.hu/images/files/79947656243.pdfIn PDF document text
- https://kingcarmotorista.net/uploads/files/41782424039.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://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000e3ba.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE3BA | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000fbcc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFBCC | 17848 bytes |
SHA-256: 75bd3634e3215d0b8386a95fc3ef0c053353119394f23cd1967af9fc896495ed |
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font_02_sfnt_off00012a6f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12A6F | 10588 bytes |
SHA-256: d82b62bb9e71eaeb1442ec705e35e786ff15d267d7c7c119220537bddd5e379a |
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