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. It contains numerous embedded URLs, many of which are part of a link farm on disposable hosting, suggesting a phishing or malware distribution campaign. The 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic indicates a deliberate attempt to obscure the true destination or spread malicious links across many domains.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
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=how+to+install+virtualbox+on+android PDF link annotation
- https://sport-jicin.cz/dokumenty/72890792795.pdfIn PDF document text
- http://macro-e.com/app/webroot/userfiles/files/84045499687.pdfIn PDF document text
- https://himalayanwanderer.com/himalayan/userfiles/files/gufoxakakorotibafafebiru.pdfIn PDF document text
- https://yenhuy.vn/upload/files/16590425087.pdfIn PDF document text
- http://cassotech.nl/site/data/ws/files/48927779253.pdfIn PDF document text
- https://plasy.com/uploads/file/94484682247.pdfIn PDF document text
- https://stellabakingcompany.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613ff5f109fb2---bupizogeloseditejigijubim.pdfIn PDF document text
- http://computer-rudolstadt.de/upload/file/24161591098.pdfIn PDF document text
- http://okudshava.ru/userfiles/file/54773413404.pdfIn PDF document text
- https://abbma.in/admin/uploads/file/zijenezazedetazalebox.pdfIn PDF document text
- http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/fc950325b24841cdf800504784123938/mugejewaferoles.pdfIn PDF document text
- http://hemeringen.de/ckeditor_ablage/userfiles/files/serebobifoxowikaxaju.pdfIn PDF document text
- https://webaprint.be/img/file/vizefekoxikijenifujuvag.pdfIn PDF document text
- http://zakuskymoser.cz/www/ckfinder/userfiles/files/jemetoxase.pdfIn PDF document text
- http://bhhangkhong.com/upload/images/files/bisap.pdfIn PDF document text
- http://talleresjpg.es/img/file/tiwewepexagidor.pdfIn PDF document text
- http://matras-devison.ru/upload/file/43501450569.pdfIn PDF document text
- http://china-miyaco.com/img/file/202191635459.pdfIn PDF document text
- https://guineaservicesproviders.com/gsp/files/79508019377.pdfIn PDF document text
- http://videotour24.com/data/fckupload/file/zuloro.pdfIn PDF document text
- http://skupka54.ru/upload/m/89463882624.pdfIn PDF document text
- http://www.perchegouet.com/ckfinder/userfiles/files/88865684104.pdfIn PDF document text
- https://hotelreviewreserve.com/basefile/hotelreviewreservecom/files/rufabubasoposakokob.pdfIn PDF document text
- http://kleinschaden-expert.de/userfiles/file/4711810842.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_off0000da91.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDA91 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000f2a8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF2A8 | 10592 bytes |
SHA-256: 35543c2a4903a51245cb5721e3f0178c9ec502d8e5f5b8b3566d7de4a96e7dc4 |
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font_02_sfnt_off00010af9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10AF9 | 17584 bytes |
SHA-256: cedf8342d0f739f3a3263789d125b40999f3db0672d07050d9ad0cee84c05ae4 |
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