MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated a high probability of maliciousness. The document contains numerous embedded URLs, many of which are part of a link farm hosted on disposable domains, suggesting a phishing or scam campaign. The heuristic PDF_SEO_DISPOSABLE_LINK_FARM specifically points to this behavior.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
Heuristics 5
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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 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://ketchas.ru/uplcv?utm_term=apostrophe+worksheet+for+class+3 PDF link annotation
- http://osstemcardiotec.com/files/fckeditor/file/11775445761520afa8e28e.pdfIn PDF document text
- http://halongbaycruises.org/upload/files/rujigamanuge.pdfIn PDF document text
- https://cevhertemizlik.com/userfiles/files/11913808735.pdfIn PDF document text
- http://studiosaletta.it/userfiles/files/70272574101.pdfIn PDF document text
- http://uklearningnetwork.com/userfiles/file/80935746367.pdfIn PDF document text
- https://alnahamgroup.com/userfiles/file/rupamifujigopojoturef.pdfIn PDF document text
- http://hainfelderteich.at/62321245993.pdfIn PDF document text
- http://pooq-design.com/app/webroot/fckfiles/file/nisuze.pdfIn PDF document text
- http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/tbhbqjtc54rvlk37st8ev5p541/78137372935.pdfIn PDF document text
- https://muguet.fr/sites/default/files/file/44191699513.pdfIn PDF document text
- https://cornerstonelaw.eu/userfiles/file/94476913042.pdfIn PDF document text
- https://foundryindia.org/userfiles/file/balel.pdfIn PDF document text
- http://neuchina.org/userfiles/file/tugokaweritegavimofikovom.pdfIn PDF document text
- http://ristoranteibucanieri.it/userfiles/files/waraxifasopidukosaganoxe.pdfIn PDF document text
- http://conflictfreeelectronics.com/ourprojects/chowki/UserFiles/renuka/file/zixunami.pdfIn PDF document text
- http://1hozain.ru/files/userfiles/files/79959281917.pdfIn PDF document text
- http://macierz-grodziec.org/files/file/98871466295.pdfIn PDF document text
- http://www.workbythai.com/admin/assets/images/54664546342.pdfIn PDF document text
- http://syuncyoku.jp/upload/file/24175676845.pdfIn PDF document text
- http://aotmoo.com/uploadfile/files/20210921_201437.pdfIn PDF document text
- http://videoacceso.com/wp-content/plugins/formcraft/file-upload/server/content/files/16131120f6d348---lufugagifonobem.pdfIn PDF document text
- http://teplo76.ru/uploads/file/38972241118.pdfIn PDF document text
- https://signika.pl/Upload/file/15396276650.pdfIn PDF document text
- https://cooperspick.com/files/35690468677.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_off0000d1e6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD1E6 | 19060 bytes |
SHA-256: 46f5d4ee785428e33f213001c4bd9073371f525e5000c298b0c7a5f4e7e47192 |
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font_01_sfnt_off000103c6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x103C6 | 10712 bytes |
SHA-256: a76158d838ca202c636023625a57ab84c5f605506115b010dc248a8babd6e69d |
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font_02_sfnt_off00011cbc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11CBC | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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