MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was flagged by a machine learning classifier and ClamAV as malicious, indicating it likely contains an exploit. The heuristics reveal it functions as a link farm, directing users to multiple compromised WordPress sites. These sites, in turn, host further PDF files, suggesting a multi-stage attack designed to obscure the ultimate payload.
Machine Learning
- Nyx PDF Classifier malicious score 0.9935
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://discoveryenglish.org/wp-content/plugins/formcraft/file-upload/server/content/files/16071d240450af---bonoguxive.pdf In PDF document text
- https://tuabogadoangel.com/wp-content/plugins/super-forms/uploads/php/files/ebaf1a6d5006ff2f666a00e1bfb5b155/73169486722.pdfIn PDF document text
- https://anpheatingandac.com/nbloom/fckuploads/file/beziwiledegoxevabumolato.pdfIn PDF document text
- http://wowbond.com/upload/Fckeditor/file/kaxevaxuzogejunuvugezuko.pdfIn PDF document text
- https://associazionedynamica.it/uploads/file/nigufuvobaj.pdfIn PDF document text
- http://mikailang.net/userfiles/file/20210514105339_1277770413.pdfIn PDF document text
- http://qianlong99.org/ckfinder/userfiles/files/68634283126.pdfIn PDF document text
- https://www.ptlittleflower.org/wp-content/plugins/super-forms/uploads/php/files/l97dnqm47v26nho4aosm1u0124/74920327843.pdfIn PDF document text
- https://spacio.hk/attachment/file/1206603901.pdfIn PDF document text
- https://rhythmcprandfirstaid.com/wp-content/plugins/super-forms/uploads/php/files/b4fdf84897b1ce9956a2fd5352123f5d/96760350696.pdfIn PDF document text
- https://www.parkgest.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1609702e735dcd---79945084730.pdfIn PDF document text
- http://teplolux72.ru/upload/file/26396782333.pdfIn PDF document text
- https://comodee.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac46b32d3a0---82069003939.pdfIn PDF document text
- https://infravoip.com/wp-content/plugins/super-forms/uploads/php/files/c1996349d92ee30098502a5c90c938f6/35107754725.pdfIn PDF document text
- http://chagatea.ru/wp-content/plugins/super-forms/uploads/php/files/6e9ee65917f60215405b6fe85193f6ff/fekopififudosuwop.pdfIn PDF document text
- http://www.goldenlantern.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160a440ddc4caa---sovovepujijatejavulimad.pdfIn PDF document text
- https://bettenbaehren.de/wp-content/plugins/formcraft/file-upload/server/content/files/16099cf9abf421---18054282560.pdfIn PDF document text
- http://nc2e.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160c2ea6d2c12d---66852310056.pdfIn PDF document text
- http://counterreaction.net/wp-content/plugins/formcraft/file-upload/server/content/files/1609852cdea259---68464705307.pdfIn PDF document text
- https://www.alertgy.com/wp-content/plugins/super-forms/uploads/php/files/1daafba9dedaaa9253d2ba10178d3959/90051374706.pdfIn PDF document text
- https://southtours.com/wp-content/plugins/super-forms/uploads/php/files/qt5hb0itks8tladqh72c0p8n81/29219475506.pdfIn PDF document text
- http://accessiblevehicleservices.com/userfiles/file/xafoniwejobiworezobituve.pdfIn PDF document text
- http://kirks-pool.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d9c7e28ef3---nobitetonebuzexana.pdfIn PDF document text
- https://earthchartercities.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a976409f0d8---60166697128.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=human+body+systems+study+guide+answer+keyPDF link annotation
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00010ec0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10EC0 | 11068 bytes |
SHA-256: 2357555f6ab3154dd5f5e2483a4fc74ff8162ce5c15d6e37bd38d52a51c4cc85 |
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font_01_sfnt_off0001285d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1285D | 17456 bytes |
SHA-256: 4134ccbcfa0e84effe8d9b0993bbaabafeb084d3a873ba9964fe4a27df9313e0 |
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font_02_sfnt_off00015570.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x15570 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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