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 pointing to various domains, many of which appear to be part of a link farm designed to obscure the ultimate destination. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' strongly suggests a malicious intent to distribute links, likely for phishing or malware delivery. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious document, potentially leveraging embedded JavaScript for malicious actions.
Machine Learning
- Nyx PDF Classifier malicious score 0.9951
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://synerhu.ru/uplcv?utm_term=frequency+bar+chart PDF link annotation
- https://netcsemege.hu/ckfinder/userfiles/files/53329932301.pdfIn PDF document text
- http://szkolka-wiercioch.pl/files/file/98124196865.pdfIn PDF document text
- http://easytravel63.ru/ckfinder/userfiles/files/97545245152.pdfIn PDF document text
- https://bushregenerators.com/userfiles/files/ropuxifexurunogal.pdfIn PDF document text
- http://zkojicin.cz/userfiles/file/74556919562.pdfIn PDF document text
- http://hongsung114.com/files/fckeditor/file/78746109068.pdfIn PDF document text
- http://europeanprofservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613357f0aa533---vemavuka.pdfIn PDF document text
- http://lesen-und-schenken.de/userfiles/files/dixomolavuvuxa.pdfIn PDF document text
- http://la-roofers.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/161371e82c9d61---82636880950.pdfIn PDF document text
- https://sledovani2.gpshlidac.cz/www/userfiles/files/zurivep.pdfIn PDF document text
- http://lynxitservices.com/ckfinder/userfiles/files/dapit.pdfIn PDF document text
- http://notar-frings.de/userfiles/file/pigosipudisabasiture.pdfIn PDF document text
- http://www.naturhalles.fr/fckeditor/userfiles/file/birigik.pdfIn PDF document text
- http://24x7taazasamachar.com/assets/ckfinder/core/connector/php/uploads/files/59221586402.pdfIn PDF document text
- http://audiencefertilization.com/fckeditor/editor/filemanager/connectors/php/userfiles/file/16711656837.pdfIn PDF document text
- http://sinhorelli.com/userfiles/file/jibibuzogebifawazemugon.pdfIn PDF document text
- https://limberhurstgallery.com/imageuploads/file/rewowavalepovobomaxi.pdfIn PDF document text
- http://lube-stc.com/ckfinder/userfiles/files/pabejadezagudemuduw.pdfIn PDF document text
- http://rothemtour.com/FileData/ckfinder/files/20210908_DA9D99A08054B226.pdfIn PDF document text
- https://eingangrad.ch/userfiles/files/71048967621.pdfIn PDF document text
- https://stephan-kratt.de/data/reiterhof/userfiles/file/16736013131.pdfIn PDF document text
- https://grouptm2.com/contents/files/73675645894.pdfIn PDF document text
- http://vandervalk.reviews/app/webroot/files/userfiles/files/maluxu.pdfIn PDF document text
- https://himalmanpower.com/ckfinder/userfiles/files/63477301746.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_off0000b00f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB00F | 10380 bytes |
SHA-256: a7ed48b4b65b9b42eb57d911a86d1952280a21ce61c548fc9226a0ef4189bde4 |
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font_01_sfnt_off0000c777.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC777 | 14992 bytes |
SHA-256: 53eedf55221de930f4087f1ffdd5db04748c040411b6f6299678800cfeb46c19 |
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font_02_sfnt_off0000ed91.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xED91 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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