MALICIOUS
174
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF document employs a social engineering lure, instructing the user to install a browser extension or update to view content. It contains numerous external URIs, including one pointing to 'oniceh.ru', suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely involving the download of a second-stage payload.
Machine Learning
- Nyx PDF Classifier malicious score 0.9979
Heuristics 7
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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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Browser extension / update installation lure high SE_BROWSER_INSTALL_LUREDocument tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
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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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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://oniceh.ru/uplcv?utm_term=transparent+funny+gifs PDF link annotation
- http://grupposcorcia.it/userfiles/files/55665501141.pdfIn PDF document text
- https://bnovum.hu/downloads/70407182786.pdfIn PDF document text
- http://www.tivafa.hu/upload/file/tanevewurimifuganuw.pdfIn PDF document text
- http://markjfox.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/madiresi.pdfIn PDF document text
- http://studiopol.com/userfiles/files/fejiwudupawizufavetigix.pdfIn PDF document text
- http://lammensfilip.be/uploads/files/11199225309.pdfIn PDF document text
- https://uzunlarpeynir.com/dursun/upload/files/vofobunewuxetefojilarup.pdfIn PDF document text
- https://tvsporedi.si/vsebina/povuw.pdfIn PDF document text
- http://rockbond-aac.com/id-admin/fckImages/file/naxigu.pdfIn PDF document text
- http://hulstcustoms.ru/uploads/files/52335294915.pdfIn PDF document text
- https://beautyyaurient.com/editor_upload/file/40713396266.pdfIn PDF document text
- https://www.andreivieru.com/ckfinder/userfiles/files/60017694881.pdfIn PDF document text
- http://jadeite.ru/images/file/pejubukujiwopobadozetewo.pdfIn PDF document text
- http://ahrestygz.com/userfiles/files/20210904_100008.pdfIn PDF document text
- http://pro-roubenky.cz/UserFiles/File/durixe.pdfIn PDF document text
- http://gewald.ru/content/Files/62350340680.pdfIn PDF document text
- http://chizclean.ru/files/fck/file/sepatuxitalawerixu.pdfIn PDF document text
- https://kakvkusno26.ru/wp-content/plugins/super-forms/uploads/php/files/9adbaf1c557b4a58b6af4e920fc3becd/39714463985.pdfIn PDF document text
- http://mamnonkitty.com/webroot/img/posts/files/gananezukebavuvureki.pdfIn PDF document text
- https://adiwirawanbali.com/wp-content/plugins/super-forms/uploads/php/files/88f8ef92ab0d9774c2573916793864f8/76118586342.pdfIn PDF document text
- https://www.bosingels.nl/ckfinder/userfiles/files/wumunezeg.pdfIn PDF document text
- http://lakesnwoodskerala.com/uploads/file/vidibadux.pdfIn PDF document text
- http://mweb.cz/images/file/fewipexosufiniv.pdfIn PDF document text
- http://parkingparts.com/Upfiles/file/86679180497.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_off000145f4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x145F4 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off00015e06.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x15E06 | 20624 bytes |
SHA-256: 993d283381030cf5c5ba1d468b1060ba3d7cd194eef4650fe698c04835ecf673 |
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font_02_sfnt_off00019339.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x19339 | 10544 bytes |
SHA-256: 150209678f923b35f8244cf9ef41935ce6391769a61268eebf6fa8d46bba4011 |
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