MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF file detected as malicious by ClamAV and an ML classifier. It contains numerous external URLs, many pointing to compromised WordPress sites, suggesting a link farm designed to redirect users to malicious content. The presence of PDF_URI and PDF_SEO_DISPOSABLE_LINK_FARM heuristics indicates a focus on external redirection, likely for phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9947
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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://queure.ru/uplcv?utm_term=how+to+breed+a+sox+in+my+singing+monsters
- https://nbcmedia.vn/ckfinder/userfiles/files/71077796320.pdf
- http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/1ef59ism7m43kl0dvmhbndj2a7/19817067825.pdf
- https://home18.ru/wp-content/plugins/super-forms/uploads/php/files/12216a1f81dc9c8beda0e97fa0827005/sazor.pdf
- https://takiminsahada.com/wp-content/plugins/super-forms/uploads/php/files/4u626c8a0n29v493dco8gcqm29/69822301690.pdf
- http://www.restorationservice.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160a75994c2b5a---rirarozisosomilori.pdf
- https://foxtailmag.net/wp-content/plugins/super-forms/uploads/php/files/003e7a6576d02069020934bd1c0c7019/68512063819.pdf
- http://www.sunargrup.com.tr/wp-content/plugins/super-forms/uploads/php/files/c3ph4nmp972b7e5e236aibatc3/bugadibitepibulezijiniwo.pdf
- http://victorylimo1.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d0f19c157a---kerizesofo.pdf
- http://candientushinko.com/images/file/bumizoxakovunujegetupiv.pdf
- https://youstore21.com/wp-content/plugins/super-forms/uploads/php/files/b3d98526d7d7548a8adc8df4a4b3d642/80909197102.pdf
- http://www.kindytennis.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b3b3a08d0a2---gujivibedajekefusob.pdf
- http://trackeg.com/en/wp-content/plugins/formcraft/file-upload/server/content/files/160b711ca0c940---18944930637.pdf
- http://alexanderkanevskyartgallery.com/clientMedia/file/8118873931.pdf
- https://dentinale.eu/wp-content/plugins/super-forms/uploads/php/files/45fa8af31238ef5cf9e700cba2d6017e/50511071578.pdf
- https://cms.blauraum.com/wp-content/plugins/super-forms/uploads/php/files/84ec02355b7f2adaaf563a99583ff9bd/97309755706.pdf
- https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/oap7hpjagrrecu9a9ud34k6e2g/kepujurerapodeb.pdf
- http://brmhn.com/userfiles/file/20210529182207_d0j97f.pdf
- http://www.buildingmalawi.com/images/uploaded/documents/15514767439.pdf
- https://alatheir.com/atheirwsfiles/file/fojaju.pdf
- https://parisautotravel.com/wp-content/plugins/super-forms/uploads/php/files/ukb5ckffil9sgsp1j67pek3i73/40485354472.pdf
- https://rhagro.com.mx/wp-content/plugins/super-forms/uploads/php/files/a63136a5790753f55215000412b4c822/sevulisom.pdf
- http://smithmurdock.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607185cfd368f---gomuwus.pdf
- http://mgmkt.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16092c23d303a0---nilogemi.pdf
- http://www.ausafrica.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160aad8b856585---zowipes.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_off0000f9dd.bin9e12937ffab6e2a541c8b5ccf2d3ee901a16b73b98849f6ceab44e3396d2f6e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF9DD | 10980 bytes |
font_01_sfnt_off00011334.bina4fe30346b1b387a338666e68bc4c014eec29b6b49c0f3853b9a7329417c6636 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11334 | 17988 bytes |
font_02_sfnt_off000141b8.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x141B8 | 16792 bytes |
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