MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous links to external resources, many of which are hosted on disposable domains and appear to be part of a link farm designed to obscure the true destination. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' and the presence of multiple unknown URLs strongly suggest a phishing or malware distribution campaign. The ClamAV detection and ML classifier further confirm its malicious nature, likely as a phishing lure.
Machine Learning
- Nyx PDF Classifier malicious score 0.9951
Heuristics 6
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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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PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARMPDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
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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://oniceh.ru/uplcv?utm_term=download+provider+apk
- http://homelife-superstars.com/image/files/7203709538.pdf
- http://pjcwyy.com/upload/file/simisibolefanatizofadim.pdf
- https://psfund.org/public/uploads/files/cms_files/kepizofubuxejoxelox.pdf
- http://kstarsmall.net/userfiles/file///95536382386.pdf
- https://sherwoodchamber.org/ckfinder/userfiles/files/85235849615.pdf
- http://n-production.com/upload/fckeditor/file/larirexegeka.pdf
- https://treasurehunterdetectors.solar-ovens.net/ckfinder/userfiles/files/pifagopaboxasuxawo.pdf
- http://nhasachnguyenvancu.com/Images_upload/files/towikivojem.pdf
- https://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/b3f99667b87aa69561c7f4fc952be8ac/wupez.pdf
- http://thueotodn.com/uploads/image/files/sutuxotonimupajegopamujex.pdf
- http://visualpaint.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613b3ab383025---dabidi.pdf
- http://greece-ex.com/images/blog/file/93537387406.pdf
- https://lakecountyoralsurgery.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613415797e542---22495465267.pdf
- http://nattuvaartha.com/assets/ckfinder/core/connector/php/uploads/files/65019875550.pdf
- https://www.sacproblemleri.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136c1f4cd15b---58540188320.pdf
- http://joinsocialbubble.com/cake/beta/userfiles/file/wuvugelatukebokos.pdf
- http://laihoawedding.com/app/webroot/upload/files/13361300169.pdf
- http://defhjdrjioo.friend-match.com/upload/files/dapamabawajakin.pdf
- http://gemcom.org/userfiles/file/2141123415.pdf
- http://lahma.pl/_u/userfiles/file/91062381295.pdf
- https://2acontractor.it/images/file/juburafa.pdf
- https://bisnismedsos.com/userfiles/file/80681732219.pdf
- http://anhuizpyy.com/upload_fck/file/2021-9-7/20210907231522577742.pdf
- http://aqcorth.specialty-match.com/upload/files/lutonanamu.pdf
- http://perfecturology.cafe24.com/upload/editor/imagefile/tebetasurenalopalunojap.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000db95.bin37434e8e9a117aba60293d5010f76890c8f931cf9636786598e41ef5f6645fb9 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDB95 | 18484 bytes |
font_01_sfnt_off00010b8f.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10B8F | 16792 bytes |
font_02_sfnt_off000123a6.bin1134fd60eaa36a82523e744c4deb065148adb2098f2f1da9a14f18ae1c326262 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x123A6 | 10364 bytes |
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