MALICIOUS
96
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file contains a link farm pointing to numerous compromised WordPress sites, each hosting another PDF. This structure suggests a multi-stage distribution or phishing campaign. The ML classifier strongly indicated maliciousness, and the heuristics point to a link farm on disposable hosting, likely intended to obscure the ultimate payload or phishing target. No scripts were extracted, limiting the analysis of direct execution vectors.
Machine Learning
- Nyx PDF Classifier malicious score 0.9942
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 http://sinara.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607b60d13bd42---15589711021.pdf
- https://arihantgranites.in/wp-content/plugins/super-forms/uploads/php/files/notnu7oo4ar9cimhf1in48apj3/3735924863.pdf
- https://studiogreenwich.ru/wp-content/plugins/super-forms/uploads/php/files/bd64640952a456d3f7fecafdafd9f489/67244107668.pdf
- http://neuragen.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160bfc0c73c4fd---dusisukunoxebunow.pdf
- https://www.vbclighting.com/wp-content/plugins/super-forms/uploads/php/files/5e660a5417ff301206861114dda66889/94803664790.pdf
- http://lws-realestate.com/userfiles/files/63154024268.pdf
- http://senseoftourism.dk/userfiles/file/18400276090.pdf
- http://saopauloairporttransfers.com/ckfinder/userfiles/files/sesakox.pdf
- http://www.trimbleexpress.sk/wp-content/plugins/formcraft/file-upload/server/content/files/160b32b2fe8ed2---88657074799.pdf
- https://xn----9sbccjdbca7cyaieg1a3j.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/2ff66fc56069b3e20104aa73e0b45a26/53098947450.pdf
- http://xperion.hu/wp-content/plugins/super-forms/uploads/php/files/3ebb59199e6476841c80b851507cb7d9/49548550760.pdf
- https://www.fecomerciomg.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/16082405a79943---48075945619.pdf
- http://www.nandomoraes.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b28e7d86cbf---xikilig.pdf
- http://slphs66.com/clients/e/e6/e62fa13cff665df70d7481f632b33819/File/57044812979.pdf
- http://gingerwooddesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a5591f63d90---84473197726.pdf
- https://amalighting.com/wp-content/plugins/super-forms/uploads/php/files/743583106b1e03ab6cf0b0c47e044324/78460203456.pdf
- https://costumeworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083e9ad0b8a4---88212406609.pdf
- https://extremetour74.ru/wp-content/plugins/super-forms/uploads/php/files/5a81744afca931900768d830006a48d7/bimikegakal.pdf
- http://englandmatchshirts.com/assets/file/gagidevefudaloxikiferidop.pdf
- http://www.anclupnapoli.it/userfiles/file/32834554369.pdf
- http://www.yoko-ono.be/images/userfiles/file/jajugob.pdf
- http://qca.ch/userfiles/file/55924356078.pdf
- https://alfa-clining.ru/wp-content/plugins/super-forms/uploads/php/files/c8e7e9bb6f1f9539a39f176193b20188/wekijuzojofovasefupis.pdf
- http://www.ponderosafestival.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b4969846d7---jawufemikenoliwilebud.pdf
- http://bike-aholic.com/UserFiles/file/jowekovupodofafazewim.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=20+lb+turkey+in+convection+oven
- 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_off0000f284.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF284 | 16792 bytes |
font_01_sfnt_off00010a9b.bincd3cd8cb31700ab42555b1e8be81505dcc4f0f13c237cff6b98a81b958728599 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10A9B | 10548 bytes |
font_02_sfnt_off000122cc.bin38042469868fa1724d66276ec8085d21f59fb21780dcbac3459570e7777925fc |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x122CC | 17008 bytes |
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