MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous links to other PDF files hosted on various domains, many of which appear to be disposable or compromised. The 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' heuristics indicate a pattern of distributing malicious content through link farms. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution.
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 https://stepweystudy.com/ckfinder/userfiles/files/komimofemamowewibefid.pdf In PDF document text
- http://pb-book.com/user_file/file/97475334324.pdfIn PDF document text
- http://ganan10.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/161305aab891f1---fimimezodixanazubeva.pdfIn PDF document text
- http://szakkepzosiklos.hu/upload/file/jupafijibawuzenisox.pdfIn PDF document text
- http://rm-centr.ru/uploads/file/63900706668.pdfIn PDF document text
- https://botroul.be/uploads/nizurukigejekapedebadilo.pdfIn PDF document text
- https://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/f8e277188e5577b4e3b8215c6821d5fc/43071127319.pdfIn PDF document text
- http://oio.cn/uploadfiles/files/duxadenokaj.pdfIn PDF document text
- http://elektrostroy.kz/ckfinder/userfiles/files/tuxifiwatowolavumorigap.pdfIn PDF document text
- http://xuanfe.com/uploads/FCKeditor/file/xogilofedazu.pdfIn PDF document text
- http://mislenyiallatorvos.hu/userfiles/file/72366859228.pdfIn PDF document text
- https://satyawatioverseas.com/userfiles/file/87848666448.pdfIn PDF document text
- https://jck.ro/userfiles/file/52564576361.pdfIn PDF document text
- https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/16131c03a6cc76---56936318987.pdfIn PDF document text
- http://havefuntogether.com/image/upload/File/nunorexumawevotok.pdfIn PDF document text
- https://cursosadistanciayonline.com/medios/files/49545490017.pdfIn PDF document text
- http://vigen12.com/userfiles/file/wafosuporekesesofuvine.pdfIn PDF document text
- http://tion.hu/upload/file/34482822530.pdfIn PDF document text
- http://kimwendelldesign.com/ckfinder/userfiles/files/30177914426.pdfIn PDF document text
- http://whipitleather.com/userfiles/file/34314372498.pdfIn PDF document text
- http://livelyway.com/ckfinder/userfiles/files/401860935.pdfIn PDF document text
- http://ccsl.asia/files/risosadobuzap.pdfIn PDF document text
- https://mtydizayn.com/userfiles/file/74722282686.pdfIn PDF document text
- https://stonebuild.bg/f/uploads/files/tobaxubopusekorabolez.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=xlsx+to+pdf+converter+free+downloadPDF 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_off0000b66b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB66B | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000ce7d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCE7D | 16344 bytes |
SHA-256: 37526e724036d12fe10c87f23673c220a3b8814677fb2146d8213f2135d6abc2 |
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font_02_sfnt_off0000f879.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF879 | 10784 bytes |
SHA-256: d6015f4edb9c64fa4ca41d7a015ed56b72d1f30ee1c9327b8fde61d67f8154ef |
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