MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous external URLs, many pointing to compromised CMS upload directories or disposable hosting, suggesting a link farm designed to redirect users. The presence of PDF-specific heuristics like PDF_URI and PDF_SEO_DISPOSABLE_LINK_FARM further supports this, indicating the PDF's primary function is to facilitate access to these external resources.
Machine Learning
- Nyx PDF Classifier malicious score 0.9978
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=volume+button+app PDF link annotation
- https://cr2tek.com/userfiles/Proj_Name/files/44618536762.pdfIn PDF document text
- http://intechsol.kz/wp-content/plugins/formcraft/file-upload/server/content/files/16146bc9c727a4---18773271874.pdfIn PDF document text
- https://cian.hr/userfiles/file/xupekevovanufeja.pdfIn PDF document text
- https://dimensionshoppe.com/alpha/ckfinder/userfiles/files/zodeferasogexaxox.pdfIn PDF document text
- http://brno-skoleniridicu.cz/ckfinder/userfiles/files/lidasilapazabekonule.pdfIn PDF document text
- http://kaus21.com/userData/board/file/tinifupobewik.pdfIn PDF document text
- https://messianic.live/wp-content/plugins/super-forms/uploads/php/files/4ccc3e11a3f5c0762c1a782584d1af53/dimutejikamazuvagume.pdfIn PDF document text
- https://trisyscom.com/userfiles/file/tajolugakofe.pdfIn PDF document text
- http://nasledie-sluck.by/var/upload/file/wozuxokijajikuxi.pdfIn PDF document text
- http://yonseri.org/userfiles/files/dovimeguxenalikadetijuwid.pdfIn PDF document text
- https://cvssteelex.com/ckfinder/userfiles/files/53966075337.pdfIn PDF document text
- https://ntpuvoice.com/ckfinder/userfiles/files/39454469392.pdfIn PDF document text
- https://ncfouting.com/wp-content/plugins/formcraft/file-upload/server/content/files/161451f56be332---57269761448.pdfIn PDF document text
- https://bibliotheque-des-arts.ch/ckfinder/userfiles/files/78332641965.pdfIn PDF document text
- http://vinhthuan.com/upload/files/74646019508.pdfIn PDF document text
- http://poiskvod.ru/images/file/65376263879.pdfIn PDF document text
- http://denda.co.kr/ckfinder/userfiles/files/60459901286.pdfIn PDF document text
- http://ags-sib.ru/ckfinder/userfiles/files/terijujovijusesuluresubi.pdfIn PDF document text
- https://umartravel.com/files/21381423213.pdfIn PDF document text
- https://rimsball.com/ckfinder/userfiles/files/85496522733.pdfIn PDF document text
- https://trichynext.com/wp-content/plugins/super-forms/uploads/php/files/50da7e8ccd4842609ff88a6fa3a6a1f2/10814120440.pdfIn PDF document text
- http://stroynerud-sm.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16153ef1649f7c---tokogegiwefurewol.pdfIn PDF document text
- http://xn----9sbbnbtte4cyg.xn--p1ai/ckfinder/userfiles/files/50095304510.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_off0000b1b4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB1B4 | 15828 bytes |
SHA-256: 38c07f8a6ab2552f3499c120df3b37ad5a213c62ef15a48e2f2fbc50e7254e71 |
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font_01_sfnt_off0000da02.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDA02 | 10260 bytes |
SHA-256: e238003702d20490b09fdc171b931d4f43d91d54b23098f62584b57b5494ac9a |
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font_02_sfnt_off0000f0e0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF0E0 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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