MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, specifically identified as a phishing trojan by ClamAV. It contains numerous links, many pointing to compromised WordPress upload directories or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The document body is heavily obfuscated and appears to be generated by wkhtmltopdf, lacking clear user-facing text but containing embedded links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9951
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 http://castudio.eu/userfiles/files/34471778441.pdf In PDF document text
- https://oriental-kitchens.com/userfiles/files/93553140443.pdfIn PDF document text
- http://halvani.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b86deb90d84---55692516577.pdfIn PDF document text
- https://voyageaventurenepal.com/upload/files/lojetaresesidopatemox.pdfIn PDF document text
- http://letresorellebio.it/userfiles/files/25066524313.pdfIn PDF document text
- https://vaytieudungtragop.com.vn/wp-content/plugins/super-forms/uploads/php/files/84m8k94ukbst27t01ijs8b4igo/74286287622.pdfIn PDF document text
- https://nowackleverkusen.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609ca2c44c810---77937604585.pdfIn PDF document text
- https://5a.ro/ckfinder/userfiles/files/22703633821.pdfIn PDF document text
- http://www.majorisinvestimentos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a394a4c064e---83486089230.pdfIn PDF document text
- https://www.idromeccanicasrl.com/idromeccanicasrl.com/wp-content/plugins/super-forms/uploads/php/files/0547f987f3e1ec60da9c23e30d56c0c8/86534384100.pdfIn PDF document text
- http://aitrans.cn/UploadFile/file/F1202105290023275568.pdfIn PDF document text
- https://www.ogblfrontaliers.fr/wp-content/plugins/super-forms/uploads/php/files/1qml4i04mm88rlfcdc748jioal/fodonagisoxu.pdfIn PDF document text
- http://citadelcaralarms.com/userfiles/file/64886514561.pdfIn PDF document text
- https://www.auditek.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160c2b2532e046---fizinanimagu.pdfIn PDF document text
- http://teaterskolen-efteruddannelsen.dk/ckfinder/userfiles/files/90659319482.pdfIn PDF document text
- http://aeskulap24h.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072d8e98ff9e---sadufidolageve.pdfIn PDF document text
- https://areshin.ru/wp-content/plugins/super-forms/uploads/php/files/b1901593d3c3b9afe64f7973eda6f4ce/4056055990.pdfIn PDF document text
- https://szabobuszrendeles.hu/files/files/puzogiwokizabaxejuz.pdfIn PDF document text
- https://www.saltriot.com/wp-content/plugins/super-forms/uploads/php/files/ae0d913b6ec57546fd85ad8c344659ea/57851495208.pdfIn PDF document text
- http://theemasternetworker.com/ckfinder/userfiles/files/60191794787.pdfIn PDF document text
- https://www.formwork.co.uk/wp-content/plugins/super-forms/uploads/php/files/1qhsg24c16br04vb46ja0dirbb/34781334232.pdfIn PDF document text
- http://mudrkanuch.sk/editor_uploads/system/files/fikotupepuladatazeduzeze.pdfIn PDF document text
- http://romanakladatelstvi.cz/userfiles/file/dexidovalawedexirijiguve.pdfIn PDF document text
- https://ipcare.nl/wp-content/plugins/super-forms/uploads/php/files/4et3op8odcisdbf8lrt173bkg7/48340092987.pdfIn PDF document text
- http://www.absolutecateringla.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c7c020e220---56677037465.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=mills+and+boon+pdf+download+free+ebooksPDF link annotation
- 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_off0000d9f4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD9F4 | 19160 bytes |
SHA-256: c17e72631162f4b8efd6bbe96e822ceded1c7896af18cb5209320094c0c14d80 |
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font_01_sfnt_off00010c8e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10C8E | 10704 bytes |
SHA-256: 07f0c97b1b18711bc9691e951d7fb2c531a0a50d2e801b1c3f1bc51b9575ecfd |
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font_02_sfnt_off00012505.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12505 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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