MALICIOUS
176
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file contains numerous embedded URLs, many of which point to compromised WordPress sites or disposable hosting, indicating a link farm designed to redirect users. The presence of a callback phishing lure heuristic suggests the document may also attempt to trick users into calling a fraudulent support number. ClamAV detection and ML classification strongly indicate malicious intent, likely for phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9968
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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Callback phishing phone lure medium SE_CALLBACK_LUREDocument asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
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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://medvor.ru/uplcv?utm_term=chisago+county+mn+jail+roster
- http://centrumbiznesurawicz.pl/userfiles/file/60675139319.pdf
- https://jnvhardoi.org/ckfinder/userfiles/files/32870898696.pdf
- http://agcslohian.com/userfiles/file/libunivijeriminosodofumi.pdf
- https://transcendenceit.com/wp-content/plugins/super-forms/uploads/php/files/a3c87e6f5abf4a6360140cb727bd5547/tekosimepojewexizufo.pdf
- http://www.ecvbrass.ch/user/web/file/femetuf.pdf
- https://agrotehholding.ru/wp-content/plugins/super-forms/uploads/php/files/7bfde7b463fc6a17d7f5885709e79373/8675264754.pdf
- http://ontheedgeofnow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160afa610bccba---86710424768.pdf
- http://charontrade.hu/data/file/xavone.pdf
- https://floridainvestment.cz/files/file/gebotuwopodifego.pdf
- http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/q93akkics68j3ul64dnfg655rb/40241370350.pdf
- https://bamfieldrental.com/userfiles/file/tefil.pdf
- http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/16078513755bbb---92041548642.pdf
- https://www.msolartop.cz/wp-content/plugins/formcraft/file-upload/server/content/files/1608166f3a7e9d---79479903695.pdf
- http://www.nowsingapore.co.id/wp-content/plugins/formcraft/file-upload/server/content/files/16081765e53a38---xubotimiteg.pdf
- http://ttlengenharia.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16099a293e71f7---xekinu.pdf
- http://posekatzahradu.cz/files/file/ropejafebozenojikanego.pdf
- http://merrygoldholidays.com/ckfinder/userfiles/files/xabaraputaputafugam.pdf
- https://centrobrands.com/wp-content/plugins/super-forms/uploads/php/files/a90a2da7898ceef684322cc00e12d33b/74202323365.pdf
- https://tongdaidoanhnghiep.com/app/webroot/upload/files/14570905288.pdf
- http://merrygoldholidays.com/ckfinder/userfiles/files/tanazugaxogesidafexufom.pdf
- http://tpdw.pl/userfiles/file/16267796487.pdf
- http://legalinet.eu/userfiles/files/xamozutewolurezariba.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_off0000d5b8.bina2f7a57e2e815b0f8d76d02073980f2e3c291b738b422db7846e24e14b7dd04c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD5B8 | 16748 bytes |
font_01_sfnt_off00010171.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10171 | 16792 bytes |
font_02_sfnt_off00011988.bin187dc1f9433d5dcedeb30db971c24f9fb14348c478d81ff1a6124e948958dda1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11988 | 11052 bytes |
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