MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as Pdf.Phishing.Trojan. The numerous embedded URLs, many pointing to compromised WordPress sites and disposable hosting, suggest a link farm designed to redirect users to malicious content. The presence of PDF_URI and PDF_SEO_DISPOSABLE_LINK_FARM heuristics indicates a strong intent to lure victims through external links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9848
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://inwebjor.ru/uplcv?utm_term=staph+infection+on+body
- http://www.victorian-manor.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160abe76b5b1ab---tawozatosapuposo.pdf
- http://www.kevinbrooks.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160bc6127ce481---81590413236.pdf
- https://shopinhome.com/ci/userfiles/files/juwuzixosenosoj.pdf
- https://www.prestigeautobody.com.au/wp-content/plugins/super-forms/uploads/php/files/92dec1893ef9787153084796a20b97c0/lumedowozuxazapanomab.pdf
- http://www.molinoag.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c50f5337a8d---9372135139.pdf
- https://www.helmmsp.ca/wp-content/plugins/super-forms/uploads/php/files/e1b8d15498f3be28410d315c17e948f6/6035944104.pdf
- https://www.hed-endo.hr/wp-content/plugins/formcraft/file-upload/server/content/files/1606c8e6332208---mofixapuludepokop.pdf
- http://bertrandetgastineaudesigners.com/userfiles/file/17957906100.pdf
- http://pamat.ro/UserFiles/file/vavinenixerogip.pdf
- https://menu2uplus.com/images/file/xixiwopejede.pdf
- http://accessiblevehicleservices.com/userfiles/file/vokuvowonolariponegelazum.pdf
- https://simplehome.ro/ckfinder/userfiles/files/zoxobok.pdf
- https://aterhesseg.com/up_image/file/zupejosijiwoditanifa.pdf
- https://swimproject.eu/wp-content/plugins/super-forms/uploads/php/files/4b1dc81bd47a00c6905966ab44f47849/fuzetexulunatezijupa.pdf
- https://m-co.de/wp-content/plugins/super-forms/uploads/php/files/81cbaedutfddhrpritkn61u5cr/sewevebewumanefenakaki.pdf
- https://www.andimoda.com/wp-content/plugins/super-forms/uploads/php/files/880f1aa549bda6f5507e7e1f5d08d112/sigiv.pdf
- http://ore-processing.ru/d/files/88606410678.pdf
- https://www.shopveriamici.com/wp-content/plugins/super-forms/uploads/php/files/r8ke08v5dpnm1jdsk9tfoa13gm/lasoxevusubilijusu.pdf
- http://el-master.ru/userfiles/file/lelexemekuxosukodufiso.pdf
- http://perfectthesale.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a3680a77c93---770223703.pdf
- http://sakirnoopo.ru/wp-content/plugins/super-forms/uploads/php/files/17f4d6cc6d93a3b6e9e413f3b8f7474d/60254556046.pdf
- https://mobistore.co.nz/wp-content/plugins/super-forms/uploads/php/files/9e6f089f7b44929b3feb95fb4b110558/simadogi.pdf
- http://www.loicadesacavem.pt/wp-content/plugins/formcraft/file-upload/server/content/files/160b0668090c13---36147105986.pdf
- https://www.rowtheerne.com/wp-content/plugins/super-forms/uploads/php/files/4f54b28c1793d4ce83cb5f9b2147d0ba/32592811980.pdf
- http://humanitool.ru/userfiles/file/85471793740.pdf
- https://www.cocochan.com.pk/wp-content/plugins/super-forms/uploads/php/files/c35326e976e0dc69ade098f704b5866d/nefofixelotogedigiramawen.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_off0000f19d.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF19D | 16792 bytes |
font_01_sfnt_off000109b4.bin9b5330a8a00415074b3b13ac1edcfefa4899122bfe2ed414392070d63a52f10e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x109B4 | 10732 bytes |
font_02_sfnt_off00012216.bincacc091ff8e595f8c4dd30e40eef57eb3efbb0793f931bd47e91a0b4d60aec64 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12216 | 16352 bytes |
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