MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous embedded URLs that form a link farm, directing users to potentially compromised websites. Heuristics indicate these links are used for SEO manipulation and point to compromised CMS uploads, suggesting a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9973
Heuristics 6
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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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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://coretry.ru/uplcv?utm_term=the+lord+of+the+rings+pdf+part+1 PDF link annotation
- http://dailynewsodia.com/assets/ckfinder/core/connector/php/uploads/files/vapolokolakajilekujop.pdfIn PDF document text
- https://bentzendesign.se/wp-content/plugins/formcraft/file-upload/server/content/files/1613240ded69be---fagovaditi.pdfIn PDF document text
- https://nidi.mk/ckfinder/userfiles/files/wirig.pdfIn PDF document text
- https://pavaniautismschools.com/wp-content/plugins/super-forms/uploads/php/files/ija9rpuihfr39ptfvcst05qp0h/mivokavazele.pdfIn PDF document text
- http://jmk.kr/ckfinder/userfiles/files/simunilovorukume.pdfIn PDF document text
- http://signexpowholesale.com/project-new/christianbook/upload_images/file/xesavot.pdfIn PDF document text
- http://kes.org/upload/editor/files/14984556789.pdfIn PDF document text
- https://truckforceone.eu/upload/editor/file/51291310161.pdfIn PDF document text
- http://mfahk.com/upload/files/81535712456.pdfIn PDF document text
- http://leebyunghun.kr/new/upload/board/files/15027349900.pdfIn PDF document text
- http://sakulchaiplace.com/Uploads/file/roroxagipifiwesopejurober.pdfIn PDF document text
- http://dietaltop.com/userfiles/files/pavabutud.pdfIn PDF document text
- https://atolab.it/wp-content/plugins/super-forms/uploads/php/files/56a4a6bd404c7148c83cd7f5b2cf11ad/sorotek.pdfIn PDF document text
- https://www.getfitcrew.com/wp-content/plugins/formcraft/file-upload/server/content/files/161392c99c433e---48497827050.pdfIn PDF document text
- http://showpelec.com/data/file/20210903_002112_593.pdfIn PDF document text
- http://rideabikenews.com/user_img/files/poturege.pdfIn PDF document text
- http://brixtontaxi.com/survey/userfiles/files/51568009664.pdfIn PDF document text
- http://anapro.com/ckfinder/userfiles/files/49061681053.pdfIn PDF document text
- http://0225674989.kad.tw/kads/ckfinder/userfiles/files/kosenotojenarote.pdfIn PDF document text
- https://buonoantonio.it/userfiles/file/xikovowi.pdfIn PDF document text
- http://uralcomservis.ru/crn_fls/crn_files/wimoxorekelijofebifixe.pdfIn PDF document text
- http://demenagements-remond.fr/userfiles/file/20210909015043.pdfIn PDF document text
- http://silverspringabw.com/uploads/files/84499054833.pdfIn PDF document text
- https://cakamuzejs.riga.lv/ckfinder/userfiles/files/24736821280.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_off0000f105.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF105 | 18532 bytes |
SHA-256: a3d5f23746758c8b2d0045acbcc294d8c1985ed50b88ce2569f3bb6ae9c5405a |
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font_01_sfnt_off000120af.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x120AF | 10792 bytes |
SHA-256: 9ede0bf1c03fa14a23bb91496914a734ae447cfacd5d7769f04083f97e945188 |
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font_02_sfnt_off00013955.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13955 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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