MALICIOUS
96
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF document contains a large number of embedded URLs pointing to various compromised websites, indicating a link farm designed to redirect users. The ML classifier strongly flagged this PDF as malicious, and heuristics identified it as a link farm on disposable hosting and pointing to compromised CMS uploads. No scripts were extracted, but the primary attack pattern involves luring users to external, potentially malicious, sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
Heuristics 5
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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://medvor.ru/uplcv?utm_term=a+dictionary+of+epidemiology PDF link annotation
- https://www.dynasil.com/wp-content/plugins/super-forms/uploads/php/files/ecc29625b329f4327c07126685c6073f/74504706552.pdfIn PDF document text
- http://grupomarsamo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160870d0a1669b---kawegafo.pdfIn PDF document text
- https://agatanorek.com/files/file/noliku.pdfIn PDF document text
- https://agroadvanced.com/app/webroot/newsletters/editor/files/sisezogekawaxu.pdfIn PDF document text
- https://www.cr-sdc.org/wp-content/plugins/super-forms/uploads/php/files/49ae6482b6572bba83331601dcb317f0/pagot.pdfIn PDF document text
- https://www.arphplumbing.co.uk/wp-content/plugins/super-forms/uploads/php/files/33g24rpcm8v2ga73obksqm2qb5/95081524205.pdfIn PDF document text
- http://cnhhgj.com/upfiles/userfiles/file/wodixamudegepekalodolive.pdfIn PDF document text
- https://cms.blauraum.com/wp-content/plugins/super-forms/uploads/php/files/ffb6a6a7a2e69fb56c3512819ed5a842/konadavujoveto.pdfIn PDF document text
- http://ctyrkolky-gamax.cz/data/dokumenty/57179966480.pdfIn PDF document text
- https://realimpacto.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c58632ccc59---22885754967.pdfIn PDF document text
- http://cainghienbinhduong.com/uploads/userfiles/file/57074565439.pdfIn PDF document text
- https://www.democratum.com/wp-content/plugins/super-forms/uploads/php/files/c9304ee3826f6d96f7b440dc6d941add/kimaxitikaremuvubur.pdfIn PDF document text
- http://drsuthichai.com/userfiles/files/79397422522.pdfIn PDF document text
- http://ipjanah.ir/wp-content/plugins/super-forms/uploads/php/files/29ojptisfe6r194mto440p54j6/patoripuxitematowoxo.pdfIn PDF document text
- http://grupomarsamo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ae31f4b712a---19611445885.pdfIn PDF document text
- http://ecompletecontact.com/ckfinder/userfiles/files/316106327.pdfIn PDF document text
- https://neavocats.com/wp-content/plugins/super-forms/uploads/php/files/8b20aac099cdd2d516828e9b9fdb8351/rezabomekarozowapuledudaw.pdfIn PDF document text
- https://advancedbusiness.co/wp-content/plugins/super-forms/uploads/php/files/aaf74e7ef07d5f405fff430eb0dc7b9d/24394494920.pdfIn PDF document text
- http://www.guaitoli.eng.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608d69cb4811e---95552494623.pdfIn PDF document text
- http://aarogyamedico.com/userfiles/file/36649939778.pdfIn PDF document text
- http://biomassasia.net/data_ed/userfiles/file/13864660914.pdfIn PDF document text
- https://3dreamstudios.com/wp-content/plugins/super-forms/uploads/php/files/830bab43016c9a6c2c5cfeaf4ea2fc7a/vuxubikuvufowosufaf.pdfIn PDF document text
- https://wcdt.co.th/wp-content/plugins/super-forms/uploads/php/files/1kcvlhsevi4ev7i8qo0duqihig/mofifupitatusadimew.pdfIn PDF document text
- 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_off0000e538.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE538 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000fd4f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFD4F | 10892 bytes |
SHA-256: 2d119b5b434110334c02a5a29c4338644745c5d342909f124d98003a1c13d106 |
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font_02_sfnt_off0001164b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1164B | 16960 bytes |
SHA-256: 2ac0860e180f775a7fd394619ba3a50e08ffeb5cd5003ed6a9b32c331038ec87 |
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