MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample is identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Multiple heuristics point to the PDF acting as a link farm, with several URLs hosted on compromised CMS upload storage and disposable hosting. The presence of a 'download button' lure further supports a phishing or malware distribution attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9846
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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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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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://unitedcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d1f48328ab---84034688679.pdf
- http://atlantichomeportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b0664d59c8a---bulaxamadonaxogo.pdf
- https://www.xcelsus.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b518c9cbd99---27153016197.pdf
- https://cvenhancer.com/wp-content/plugins/super-forms/uploads/php/files/67f455a56bd9ae6caf6a50af629c16ad/fakodimebeberor.pdf
- https://lightsourceindiana.com/wp-content/plugins/super-forms/uploads/php/files/01913b394e2b48b147ee564aff8f0865/54123081647.pdf
- https://prosegik.com/wp-content/plugins/super-forms/uploads/php/files/6af9e26fff938978b5f778d5f16020e8/mixab.pdf
- https://lawpropertyconsultants.co.uk/wp-content/plugins/super-forms/uploads/php/files/h35mm3ofl7hq2q76epdgonf5jt/85264685282.pdf
- http://asirius.su/wp-content/plugins/super-forms/uploads/php/files/e3d3b5e503ad03ed718c7adef12f7948/89711987368.pdf
- http://afgventuregroup.com/cfiles/file/vejavikevanenepubiweke.pdf
- http://www.gainerwindows.ca/wp-content/plugins/super-forms/uploads/php/files/9ad7vnbsij2fk4gk04aq5aats0/32709242561.pdf
- http://artgraf24.pl/userfiles/file/sofixe.pdf
- http://assessmentinsight.com/ckfinder/userfiles/files/71917978760.pdf
- http://dochoiotovn.com/uploads/userfiles/file/xipimeliwamenov.pdf
- https://yourlightingbrand.com/wp-content/plugins/super-forms/uploads/php/files/c41911bbdceaa236c7ef6e43b243d77a/danomudafol.pdf
- http://midel.me/userfiles/file/sosesudikowuluz.pdf
- http://montaze.org/democms/userfiles/file/67126403956.pdf
- http://wrtour.com/FileData/ckfinder/files/20210613_2320DBAB332C53CA.pdf
- https://daleel.global/wp-content/plugins/super-forms/uploads/php/files/i36nf2jo3qq9fd63du3dbk0mid/temew.pdf
- https://psychotherapie-dr-albrecht.de/wp-content/plugins/formcraft/file-upload/server/content/files/160ab1a303e5e2---pozexixuxenazikepiluk.pdf
- https://lienlacanien.com/img_pages/file/47537571791.pdf
- http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/r35usq3hu6b452m85fmumj0ue2/defaneb.pdf
- http://constructionone.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160963058ce3f3---58883877176.pdf
- http://drvision.org/wp-content/plugins/formcraft/file-upload/server/content/files/160807996506d2---21039681279.pdf
- https://amartzon.store/wp-content/plugins/super-forms/uploads/php/files/fa1563e9a601d428a72a931640583864/duzulowurobuza.pdf
- https://trichynext.com/wp-content/plugins/super-forms/uploads/php/files/b8466bf0c1d738e472937cb65cd1817f/ruxagojixom.pdf
- http://www.guaitoli.eng.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c6d59a112e3---kegejisubilobumafego.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/cv9VXjIrmdE/uplcv?utm_term=the+english+circle+class+7+solutions+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_off0000cd3d.bind989a87fdac9c77ae90a0aec96d199c0c1472632cea460d03e60c5d6ed1e7679 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCD3D | 17112 bytes |
font_01_sfnt_off0000fa31.bin2577f85b571198d32727a126c9bcb81eb5f64a78f7bfe043565614f72b1cf00d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFA31 | 11012 bytes |
font_02_sfnt_off00011391.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11391 | 16792 bytes |
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