MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, with numerous embedded URLs pointing to compromised WordPress sites and other domains, likely serving as a distribution point for phishing or malware. The presence of PDF_SEO_DISPOSABLE_LINK_FARM and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM heuristics further supports its role in directing users to potentially harmful content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9936
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://chcial.ru/uplcv?utm_term=general+form+equation+of+a+parabola
- https://sipsib.ru/wp-content/plugins/super-forms/uploads/php/files/69d32b012af144d297ad358d558a2b4b/70917345629.pdf
- https://dascalita.ro/app/webroot/files/userfiles/files/15240280639.pdf
- https://alcc.vn/wp-content/plugins/super-forms/uploads/php/files/hh0n005ht5kmf4q53edi8fpgk3/9649603718.pdf
- http://baikalspring.ru/ckfinder/userfiles/files/67165261343.pdf
- http://carefirstwalkathon.com/clients/8/89/89514deb4c0e8807eb046cac28c4977f/File/kadidawepulef.pdf
- https://greenturtleproductions.com.au/wp-content/plugins/super-forms/uploads/php/files/e41b6177e1b8fa5c396b263d136a0795/71730050861.pdf
- https://mlmrockstars.com/ckfinder/userfiles/files/91910944174.pdf
- https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/f800214062e5f34a3b5f4c4e5e66e56f/mupil.pdf
- http://www.tif.cn/wp-content/plugins/super-forms/uploads/php/files/kk5nsqkn71b1u0sb0eobp1q9ti/11179588147.pdf
- http://technoculture.cz/admin/upload/file/70053788008.pdf
- http://nensi.si/upload/file/61904511912.pdf
- http://hubbardfamilycircle.com/clients/62940/File/29531006751.pdf
- http://israel-aliya.com/wp-content/plugins/super-forms/uploads/php/files/5e3faad0b8da48e9d46556719698a8c8/papaxawi.pdf
- https://fuchscars.com/wp-content/plugins/super-forms/uploads/php/files/be4a62fbe5db0c95e7862837697812e3/xisudibasamugoxig.pdf
- http://www.vikingmaterials.com/img/45645255916.pdf
- https://completecollegestrategies.com/wp-content/plugins/super-forms/uploads/php/files/ac1e405f8251a95a59fdf350fad177b2/kobile.pdf
- https://puertoestereo.com/wp-content/plugins/super-forms/uploads/php/files/f124jlr2rbba1t323s9n3fvlh6/kivewezelisepuwi.pdf
- https://ecoinkworld.com/wp-content/plugins/super-forms/uploads/php/files/28e143f063fc4bb1123230b88f2a97a3/xesejusorexemipunolubawo.pdf
- http://ceramicaartisticamarsalese.it/userfiles/files/70881401456.pdf
- http://ztkammer.at/uploads/file/jagegek.pdf
- http://bajajsports.com/userfiles/file/finifibanigupa.pdf
- https://massagetheory.ca/wp-content/plugins/super-forms/uploads/php/files/fb3467128f79680c282fb08d5ba453fe/24937088447.pdf
- https://siyata.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/160a19905e28cd---5621979027.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_off00011e38.binaa99a201595e1d33b8cb56dc3476e140f82a891006ec81b7a906ad2d1b8ffc9a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11E38 | 18152 bytes |
font_01_sfnt_off00014e03.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14E03 | 16792 bytes |
font_02_sfnt_off0001661a.binf49d13bb78544ef34331815172ff256762ad8377f844afdcd3fc9cec2142ae52 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1661A | 10776 bytes |
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