MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains a link farm directing users to multiple compromised WordPress sites, which in turn host other PDF files. This behavior is indicative of a phishing or malware distribution campaign. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to lure users to download further malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9966
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://advancedbusiness.co/wp-content/plugins/super-forms/uploads/php/files/0dce9b9e92e1d5a3b12edf26a3e4e405/rupilukoberavalutezudon.pdf
- https://arenda1s.ru/wp-content/plugins/super-forms/uploads/php/files/965da55b33d8135a79c687a60ee03750/pibibowifutaluvo.pdf
- http://poaglasses.com/uploads/files/202109010656368068.pdf
- https://oteaexpert.fr/cite_imgs/file/44994044437.pdf
- http://execdentalclinic.com/uploads/ckfinder/userfiles/files/39905569095.pdf
- http://pekingtogo.com/uploads/files/90467880418.pdf
- http://nicenpos.com/userData/board/file/95516090734.pdf
- https://www.hotel-palladium.gr/wp-content/plugins/super-forms/uploads/php/files/vt50dg1k295pnbtd9am4da9moc/99455559055.pdf
- http://www.everhouse.lt/wp-content/plugins/formcraft/file-upload/server/content/files/160b9edbd3aa1b---jakofi.pdf
- https://badrivishal.com/media/95371916687.pdf
- https://www.diktu.com/wp-content/plugins/formcraft/file-upload/server/content/files/16092a736537ad---84274834295.pdf
- https://drisraadentalcenter.com/userfiles/file/sonexaterujodib.pdf
- http://stsaischoolamritsar.com/slbdavbatala/userfiles/file/49758303566.pdf
- https://lsp.od.ua/wp-content/plugins/super-forms/uploads/php/files/63ljijr089g1jmf9aruegqhgg7/48558771399.pdf
- http://robotsuk.com/luckingbros.co.uk/userfiles/files/99007696169.pdf
- https://rclurie.com/wp-content/plugins/super-forms/uploads/php/files/33482e4ad2b03df54139d661cd622f1b/56055381077.pdf
- https://pointvirgule.ca/upload/editor/file/15557781851.pdf
- https://ncfouting.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b2ad5dadc09---kajeboxutedadukuv.pdf
- http://ecohouse-lab.com/userfiles/file/63418569515.pdf
- https://nnt52.ru/userfiles/file/96111285160.pdf
- https://ccichn.vn/data/upload/file/97461453849.pdf
- http://www.skupp.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1607ad553b6462---17698250808.pdf
- http://hrt-foto.hu/_user/file/12684390642.pdf
- http://travelport.pl/userfiles//file/kikepupoxixefi.pdf
- http://pecsimutargygaleria.hu/files/file/wizupewugijasimijudiped.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=cpu+hardware+troubleshooting+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_off0001dfcf.bin1e8d869d1564ad6d8810da05ef11fba38f5773d727cbc15a39301269743c3cbe |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1DFCF | 11136 bytes |
font_01_sfnt_off0001f967.bin2ce0e9147dd8b24d066705d505b25b206b68bd4b6c70fb7fc286131709b2a136 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1F967 | 21640 bytes |
font_02_sfnt_off00023304.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x23304 | 16792 bytes |
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