MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier indicating a high probability of maliciousness. The presence of numerous external URIs, many hosted on compromised CMS platforms, suggests a link farm designed to redirect users to malicious content. The 'SE_DOWNLOAD_BUTTON' heuristic indicates a deceptive call-to-action, likely intended to trick users into downloading a payload.
Machine Learning
- Nyx PDF Classifier malicious score 0.9992
Heuristics 7
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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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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://chcial.ru/uplcv?utm_term=record+sealed+vs+expunged
- https://rhagro.com.mx/wp-content/plugins/super-forms/uploads/php/files/91c7d3ae95b8a8a5231eddbe72d65fd0/tuxujanivafowedeza.pdf
- http://hotelclinton.it/userfiles/files/94244198362.pdf
- http://aexpress.lv/index/images/up/file/kakalilabireg.pdf
- http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/1609224efc12bf---73025159283.pdf
- https://www.olympusnorge.no/wp-content/plugins/super-forms/uploads/php/files/k4obfpjnbbamdqu6gk71mmfgc6/tusobisamigat.pdf
- http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160bc9880da538---sejuzikeriled.pdf
- http://fittbikese.hu/files/file/gidopaxuxonabanovix.pdf
- http://carrozzeriabosini.net/userfiles/files/xuwiw.pdf
- http://ljhalls.com/wp-content/plugins/super-forms/uploads/php/files/d83794e6d3bb07dce0ecc53e9e499b21/demotapevanexajisox.pdf
- http://kondicionery-ivanteevka.ru/upload_picture/file/82799142234.pdf
- http://gennarimaq.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160abcc232db74---90449861161.pdf
- https://brune-schmuckwerk.de/ckfinder/userfiles/files/68402136040.pdf
- http://unseenadventure.com/userfiles/file/zekepajojirixuzot.pdf
- https://aawyx.com/sites/default/imageuser/file/piporulolovugoma.pdf
- http://clinicacomciencia.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608674a0e9ae6---koxar.pdf
- http://www.alwaysflorida.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070bd0f5392d---reninuwifu.pdf
- https://tripleccompanies.com/wp-content/plugins/super-forms/uploads/php/files/fbc1e5e6db6b2650d4ff94db66a82e1f/62179056494.pdf
- http://dansecyr.ca/pdf/file/93581966788.pdf
- https://luminex.pl/upload/file/92510998508.pdf
- https://anmoul.com/userfiles/file/25265067770.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_off0000e279.bin2f1246a725b07c4f37032dcf538c9cc39141a8b4a72d204d96759a9f20ded7ef |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE279 | 10812 bytes |
font_01_sfnt_off0000fb5f.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFB5F | 16792 bytes |
font_02_sfnt_off00011371.binc484f1b3dead8ad2c6c3f1c1c6c9cae340bc3484b137a987e4acf2b412072364 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11371 | 16588 bytes |
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