MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains a link farm pointing to multiple compromised WordPress sites and disposable hosting, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. No scripts were extracted, but the structure and embedded URLs are indicative of a malicious document designed to redirect users to harmful content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9928
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 http://cdkkck.com/uploadfile/file/20210525151027.pdf
- http://geose.ru/userfiles/file/938080761.pdf
- http://www.guaitoli.eng.br/wp-content/plugins/formcraft/file-upload/server/content/files/160ac8ff16eb5b---majadigavemulivaru.pdf
- http://diagonal.org.ar/wp-content/plugins/formcraft/file-upload/server/content/files/16094b14de4239---bugabeperabowemenusa.pdf
- https://abofahed.com/userfiles/file/74274540407.pdf
- https://psychotherapie-dr-albrecht.de/wp-content/plugins/formcraft/file-upload/server/content/files/16086fd807f6b2---filosaruvabajatuzogu.pdf
- http://dok-vo.ru/userfiles/file/wezujedijosuguw.pdf
- http://kubak-ubezpieczenia.pl/userfiles/file/5769887697.pdf
- https://mission4recruitment.com/wp-content/plugins/formcraft/file-upload/server/content/files/160920d7ae4697---xiwomedenabidepaga.pdf
- https://lsp.od.ua/wp-content/plugins/super-forms/uploads/php/files/m3hf2qk7620tm8cboscfoa4dh0/dexitadasareg.pdf
- https://adm.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/1cb385530327f9e986c64fd7de6c2134/75251367995.pdf
- https://www.tunnel.de/files/uploaded/file/86389728608.pdf
- https://www.glasswindowequipment.com/wp-content/plugins/super-forms/uploads/php/files/629cc3f86755aa5edfb3ec4caee31472/jedumob.pdf
- https://precisionautoandac.com/wp-content/plugins/super-forms/uploads/php/files/d4472aa3f03e2476205ab10bd6afd888/27536556996.pdf
- https://solarconsulting.org/wp-content/plugins/super-forms/uploads/php/files/6c82a28521a61cd133b7d975a7811212/29966986467.pdf
- https://engineeredrepinc.com/wp-content/plugins/super-forms/uploads/php/files/995e46ba9ce1257bd7156a5ac324b2f7/jufopakufu.pdf
- http://thefutureofgolf.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160c1baebc73d0---kazokeniwaxe.pdf
- https://tailormade-sales-marketing.com/userfiles/file/dobozopolofunosufafuw.pdf
- https://www.syah.org/wp-content/plugins/super-forms/uploads/php/files/5d3e5e486f6023cd350fa24cecdb9b55/39091539232.pdf
- http://brodart01.com/wp-content/plugins/super-forms/uploads/php/files/6tjf2nsfeldi20bhov7qp9chbi/91313045876.pdf
- https://rhagro.com.mx/wp-content/plugins/super-forms/uploads/php/files/614d2a92c06183e082d03f94bffd55cd/gukotujowujuj.pdf
- http://dragoniresorts.com/userfiles/857350061.pdf
- https://www.idahomedia.com/wp-content/plugins/super-forms/uploads/php/files/a2010cbb0d04f48c79372b949d11db2f/fasebo.pdf
- https://liniagdanskzydowo.pl/files/saketujudenimirur.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=scp+texture+pack
- 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_off00011a2b.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11A2B | 16792 bytes |
font_01_sfnt_off00013242.bin011282435dc0f61d523bb50c3151db9053a3b73d21f2ed590cad2a297cc3215a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13242 | 10208 bytes |
font_02_sfnt_off0001495d.binc20d459704b9a582ecd09e652e92c4c9c42f8799cc5b571b25d6ef13bc6fd644 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1495D | 18772 bytes |
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