MALICIOUS
96
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file exhibits characteristics of a link farm, with numerous embedded URLs pointing to various domains, many of which appear to be compromised WordPress sites. The ML classifier strongly indicates maliciousness, and the heuristic firings suggest a deliberate attempt to create a link farm for SEO manipulation or to host further malicious content. No scripts were extracted, but the overall structure and URL distribution point to a malicious intent to redirect users to potentially harmful sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9953
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://laborke.ru/uplcv?utm_term=chemistry+of+coumarins+pdf PDF link annotation
- http://www.sunarmisir.com.tr/wp-content/plugins/super-forms/uploads/php/files/iu93pru91f9nrcrt4p24o7fon0/ludalativ.pdfIn PDF document text
- http://elmiraclassiccountry.com/wp-content/plugins/super-forms/uploads/php/files/dkev2b9fpm187oevptqlj34kj1/4656583094.pdfIn PDF document text
- https://beautydiction.com/ckfinder/userfiles/files/872189375.pdfIn PDF document text
- https://urbanplace.me/wp-content/plugins/super-forms/uploads/php/files/dc976f452dfd9134f7a674df819c3293/xuxuwa.pdfIn PDF document text
- http://5m-tti.com/uploads/image/files/65960352880.pdfIn PDF document text
- http://entone.es/wp-content/plugins/super-forms/uploads/php/files/16d688f147b1c5f6c9a32de784c03394/megog.pdfIn PDF document text
- http://betheaskssd.com/flash/betheaskssd.com/file/ruseloxokugabarusapo.pdfIn PDF document text
- https://seeandhearbetter.ie/img/shop//contents/99723105680.pdfIn PDF document text
- http://fairview58.org/clients/b/b5/b5cf5456a34e3fefef15e35162a7177a/File/45485965303.pdfIn PDF document text
- https://propertiproperty.com/Uploads/userfiles/files/80479520487.pdfIn PDF document text
- http://cancunday.com/travela/img/files/42862886676.pdfIn PDF document text
- http://isvpro.com/custom/files/32135043646.pdfIn PDF document text
- http://bscsaoner.in/ckfinder/userfiles/files/43400572195.pdfIn PDF document text
- http://mstreatmentadvances.com/userfiles/files/167738668.pdfIn PDF document text
- https://roadtoring.com/wp-content/plugins/super-forms/uploads/php/files/b8627680bd1142b73c269d1e9b5d842b/36263297498.pdfIn PDF document text
- http://peaceinsrilanka.lk/userfiles/file/veguvepetomunok.pdfIn PDF document text
- http://bouncebodysupplements.com/newerac2c/userfiles/file/16469383704.pdfIn PDF document text
- http://serdceprirody.ru/userfiles/file/99543359300.pdfIn PDF document text
- http://qbcar.ru/ckfinder/userfiles/files/nujojub.pdfIn PDF document text
- http://regimhotelierbucuresti.com/images/userfiles/89657619317.pdfIn PDF document text
- http://www.sensible-seeds-premium.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e1ba204e89---dikiluputaralujasak.pdfIn PDF document text
- http://dgkno.cn/upload/xenojopuzazirexuwurofijoj.pdfIn PDF document text
- https://www.phoenixdentalacademy.co.uk/wp-content/plugins/super-forms/uploads/php/files/37d0900e2c2cb1c17455dda3450a61a5/83715911228.pdfIn PDF document text
- http://daindnc.com/fckeditor/userfiles/file/jabitokabutawujitumarir.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_off0000cfb9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCFB9 | 19244 bytes |
SHA-256: 3d5b3e63904473fcaf60deb0e3720c83c9fc064f966dbf7c30e547f704339b8e |
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font_01_sfnt_off000101eb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x101EB | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00011a02.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11A02 | 11084 bytes |
SHA-256: 00bfb257482d235a8d6bd91740e6793533270e51ebcfb877b159aa7930506b5f |
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