MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous embedded URLs, many pointing to compromised WordPress sites and disposable hosting, indicative of a link farm used for phishing or malware distribution. The ML classifier and ClamAV detection strongly suggest malicious intent, classifying it as a phishing trojan. Although no scripts were explicitly extracted, the nature of the URLs and the heuristic firings point towards a malicious document designed to lure users to external malicious sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9846
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://coretry.ru/uplcv?utm_term=anestesia+general+pdf+2018 PDF link annotation
- https://mclandpin.com/calisma2/files/uploads/mazozakuxubukidi.pdfIn PDF document text
- http://magnachip.cn/userfiles/file/20210516135256.pdfIn PDF document text
- http://leoclubmarsala.it/userfiles/files/newijesadajuzalirodibof.pdfIn PDF document text
- https://araprinter.com/ckfinder/userfiles/files/99125880632.pdfIn PDF document text
- http://densayhongngoai.com/uploads/userfiles/file/nigulemasizefel.pdfIn PDF document text
- http://hwayinn.com/image/files/20210822_054831.pdfIn PDF document text
- http://www.evisiontiendaonline.com/ckfinder/userfiles/files/20451926093.pdfIn PDF document text
- http://esthebel.de/userfiles/file/14572623912.pdfIn PDF document text
- https://biserica-izvorul-tamaduirii.ro/files/belepadasiwesotapeka.pdfIn PDF document text
- http://lawcab.ru/wp-content/plugins/formcraft/file-upload/server/content/files/161134789c55dd---9115758432.pdfIn PDF document text
- https://www.landalastadservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608fb60b7a404---wexumevosotoxuzodatijed.pdfIn PDF document text
- https://atolab.it/wp-content/plugins/super-forms/uploads/php/files/437c5154f36f3dc11a55accf7f8a8cdc/kasikenaseletibejij.pdfIn PDF document text
- http://bizbecho.com/pa/trainstation/uploads/image/file/tirezefiw.pdfIn PDF document text
- https://www.gml.de/wp-content/plugins/formcraft/file-upload/server/content/files/160810a265ee41---13366471521.pdfIn PDF document text
- https://mziagroup.com/wp-content/plugins/super-forms/uploads/php/files/a8o6sqan3vcc43dds1g4evqpa6/togotowedop.pdfIn PDF document text
- https://saporidelletnastore.it/file/70472481573.pdfIn PDF document text
- https://ihotel2b.com/upfiles/editor/files/wivopejovuwite.pdfIn PDF document text
- https://plentis.eu/ckfinder/userfiles/files/81652469246.pdfIn PDF document text
- http://wonderful-foods.net/userfiles/file/rinigutavetivebukinew.pdfIn PDF document text
- https://www.wizzfizz.com.au/application/third_party/ckfinder/userfiles/files/giwaka.pdfIn PDF document text
- http://kadh.kr/bobod/upload/file/43736830873.pdfIn PDF document text
- http://audiomaster.se/wp-content/plugins/formcraft/file-upload/server/content/files/1607f12f904214---jomirefikisasomobul.pdfIn PDF document text
- http://ophirtonhotel.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/161074a618e10c---rudanazo.pdfIn PDF document text
- http://growlink.biz/userfiles/file/41335006701.pdfIn PDF document text
- http://kammatrans.com/userfiles/files/72110780715.pdfIn PDF document text
- http://acetuitioncentre.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607bbb8502bc7---gexigigasejuxato.pdfIn PDF document text
- 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_off0000d691.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD691 | 11036 bytes |
SHA-256: f5029605904652007599ee3eb787506a1e50cada6db9020ed3c7fde3d3156b78 |
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font_01_sfnt_off0000f046.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF046 | 18868 bytes |
SHA-256: 0b63957fd76defc2f3c2ebd0fddb898206c90fe1778959111e7924366aa61c4c |
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font_02_sfnt_off000120ab.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x120AB | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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