MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF containing embedded JavaScript, which is a common technique for delivering malicious content. It includes numerous external links, many pointing to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9840
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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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://queure.ru/uplcv?utm_term=vb.net+basic+tutorial+pdf
- https://hydratrend.com/application/third_party/ckfinder/userfiles/files/54686231102.pdf
- https://stellabakingcompany.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609841bae016d---15903296140.pdf
- http://www.greddy.com/admin/common/ckfinder/userfiles/File/xezipuzaf.pdf
- https://bangvetthuong.com/luutru/files/83923830062.pdf
- https://leanuslab.com/UserFiles/file/nowixiwudijeleditusivas.pdf
- http://amexeuro.com/an3_Uploads/file/20753481730.pdf
- https://konferencii.ru/js/ckfinder/userfiles/files/sofurokobobuteguzajoku.pdf
- https://www.litesourcenc.com/wp-content/plugins/super-forms/uploads/php/files/f31c931e3203781b1462a0b585f6a6ff/mibozupodediware.pdf
- http://hyundai-dongdo.vn/images/files/gifododufiridoxab.pdf
- http://sushiyaslo.com/uploads/files/wetogix.pdf
- http://polymer-optix.de/userfiles/file/tolefipimijozufiroxixo.pdf
- https://nowbali.co.id/wp-content/plugins/formcraft/file-upload/server/content/files/160a10817ecd67---kijukegofapomefoxexakum.pdf
- http://yigang-lin.com/uploads/files/202108160454141126.pdf
- http://www.yoko-ono.be/images/userfiles/file/79275352738.pdf
- http://www.peplex.it/wp-content/plugins/formcraft/file-upload/server/content/files/160a579a87e22b---92464467442.pdf
- https://criteriacambio.com.br/wp-content/plugins/super-forms/uploads/php/files/lv51c98ub3cd2v66njvvb89rk7/31540400219.pdf
- http://frankslawfirm.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/zibodudakorowagikevevira.pdf
- http://modelkyujin.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9492e27b75---jipewiparero.pdf
- http://inventory-acepipe.com/images/uploads/files/31488680599.pdf
- http://www.qookspot.kitchen/wp-content/plugins/formcraft/file-upload/server/content/files/160c1026787052---salakositesopaverububa.pdf
- http://spadhotel.com/basefile/spadhotelcom/files/64645408316.pdf
- https://choiceenergynetwork.com/wp-content/plugins/super-forms/uploads/php/files/f3e7792e7f8a68fa7170da3b3d0e269c/fetiwipizuremoxezimome.pdf
- https://mimpishio1bet.net/contents//files/suwifujosox.pdf
- http://sushigonewildtogo.com/uploads/files/24433415791.pdf
- https://sweetestspaparty.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609628f94fae6---66940797207.pdf
- http://www.rolstoellift.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c04d6474332---74353122393.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_off0000c036.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC036 | 16792 bytes |
font_01_sfnt_off0000d848.binc40e1ec2fa7bc939cd4a5279097ed9eb6fe131d9900f73f2ee0a4a0333d60af8 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD848 | 17036 bytes |
font_02_sfnt_off0001046d.bin9928456744a6fd955828b0899bbecde5d4c7a5731589c7d859874a3054786181 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1046D | 10888 bytes |
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