MALICIOUS
142
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains embedded JavaScript and numerous external URIs, including one pointing to 'krisoc.ru', which likely serves as a download lure. The presence of a visual download button further supports the phishing or malware distribution intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
Heuristics 7
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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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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=download+ps+vita+emulator+android PDF link annotation
- http://hagelkonzept.de/userfiles/file/musozenijoxonalarovali.pdfIn PDF document text
- http://barcelonasixtytwo.com/userfiles/file/52280279472.pdfIn PDF document text
- http://frutapac.es/ckfinder/userfiles/files/22384889456.pdfIn PDF document text
- https://hotelcorona.ro/files/1684795248.pdfIn PDF document text
- http://fandimnarodaku.cz/upload/file/digezitiragivuxun.pdfIn PDF document text
- http://cicm2015.mist.ac.bd/app/webroot/ckfinder/userfiles/files/zijolezezesolunuvumaxuboj.pdfIn PDF document text
- http://retroldn.com/userfiles/file/53402447623.pdfIn PDF document text
- http://nassagroup.org/app/webroot/js/ckfinder/userfiles/files/5854488715.pdfIn PDF document text
- http://evergreendentistryva.com/app/webroot/js/ckfinder/userfiles/files/76461530920.pdfIn PDF document text
- http://cautrucpalang.vn/webroot/img/files/76087969193.pdfIn PDF document text
- http://www.next-conseil.fr/wp-content/plugins/formcraft/file-upload/server/content/files/161412f0ba6f27---norofovedamudu.pdfIn PDF document text
- https://www.karelo.com/uploads/File/22282466752.pdfIn PDF document text
- http://skolky.info/foto/images/file/60900832582.pdfIn PDF document text
- http://z-him.ru/userfiles/file/95755223954.pdfIn PDF document text
- https://dom-titan.rs/files/17429476292.pdfIn PDF document text
- http://baikalspring.ru/ckfinder/userfiles/files/95488278094.pdfIn PDF document text
- https://locoffice.ru/userfiles/file/18193066720.pdfIn PDF document text
- http://lukoilmarine.com/ckfinder/userfiles/files/61690185843.pdfIn PDF document text
- https://mmgrowersg.com/ckfinder/userfiles/files/goxomukupogibolesizeparuw.pdfIn PDF document text
- http://fantasymusic.it/userfiles/files/genewuwakidomopezofejig.pdfIn PDF document text
- http://vishwkarmaenterprises.com/webroot/img/userfiles/files/bifudubinuvuxedefenibo.pdfIn PDF document text
- http://pass38.com/images/contentimages/files/zarapoxidotinenu.pdfIn PDF document text
- http://driscollandgibson.com/images/edit_images/file/53271604222.pdfIn PDF document text
- http://yuseigachi.nl/wp-content/plugins/formcraft/file-upload/server/content/files/161409e8fbe59f---58430056287.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_off0000d94c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD94C | 10808 bytes |
SHA-256: a77f8cadbd3449a79ed6d522192a4feb57a3adfdbdd8582403be723fc8edaa59 |
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font_01_sfnt_off0000f23c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF23C | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00010a4e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10A4E | 17384 bytes |
SHA-256: 49fe672c7429e6fb5c332ace1427966772c26593b6169fda0e24f8ecde52a57a |
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