MALICIOUS
96
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains a large number of embedded URLs, many of which point to other PDF files hosted on various domains. Several heuristics indicate that these links are part of a link farm, with some hosted on compromised CMS uploads. The ML classifier strongly suggests malicious intent, likely to distribute further malicious content or engage in SEO spam.
Machine Learning
- Nyx PDF Classifier malicious score 0.9953
Heuristics 5
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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=74ls04+hex+inverter+gates+datasheet PDF link annotation
- http://koreanhotpot.com/uploads/files/wusapavisotenasuri.pdfIn PDF document text
- https://bodymason.com/user_uploads/files/xexomiw.pdfIn PDF document text
- http://files.ibiza-ferien.de/file/32403673894.pdfIn PDF document text
- http://mn-lawfirm.com/box/userfiles/file/zobevum.pdfIn PDF document text
- https://comfort8889.com/upload/files/nezuveropu.pdfIn PDF document text
- http://demkapi.com/resimler/files/48380283310.pdfIn PDF document text
- http://dwallacelaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/mobapesubiloteso.pdfIn PDF document text
- https://keongracun.org/contents/files/nifuloxenusujokixinotixip.pdfIn PDF document text
- http://www.heatandgas.com/EditorImages/file/38816452830.pdfIn PDF document text
- http://garmaclima.com/uploads/ckfinder/files/43691959292.pdfIn PDF document text
- http://cesnek-vysocina.cz/UserFiles/File/nirajufakezulufisisaw.pdfIn PDF document text
- http://accessiblevehicleservices.com/userfiles/file/vixajejalakiriwowunumejew.pdfIn PDF document text
- http://maslatalaia.com/userfiles/file/jaxevuveveris.pdfIn PDF document text
- http://website-design-company.in/dev3/damodar/ckfinder/core/connector/php/userfiles/files/27429202041.pdfIn PDF document text
- https://essaidafm.com/uploads/FCK_files/file/71433472595.pdfIn PDF document text
- http://aeskulap24h.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613d5c8677a5d---vufekezopasazejiduvowov.pdfIn PDF document text
- http://kingspec.su/wp-content/plugins/super-forms/uploads/php/files/1dvi3ms7eujghjn8ffn99esai6/gurawi.pdfIn PDF document text
- https://nusamulticentralestari.com/Uploads/userfiles/files/30169281662.pdfIn PDF document text
- http://28777886.com/Lpf/UPFILE/userfiles/files/xonafobajug.pdfIn PDF document text
- http://codemessaging.net/ckfinder/userfiles/files/tegeniparitovisal.pdfIn PDF document text
- http://www.stratcareerservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f0a09e76a2---tuwifuzoxaramepulosisol.pdfIn PDF document text
- http://adec-interiors.net/Uploads/file/40080877058.pdfIn PDF document text
- https://greenturtleproductions.com.au/wp-content/plugins/super-forms/uploads/php/files/ec8a14cdc247ee5b90a9f0ccc201db57/tiromubikoraxopavixituw.pdfIn PDF document text
- http://zhatuogz.com/uploadfile/file/81466220342.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_off0000d278.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD278 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000ea8f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEA8F | 10728 bytes |
SHA-256: a1257c2fad5429bb1214f79e8db2c08e0da62cf9ea320a5d0ae01e290ff0121d |
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font_02_sfnt_off00010317.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10317 | 17908 bytes |
SHA-256: 448c86fa22b6d78d201eb0708f464a5d58bc0fc343e462ac491aebc16d233eaa |
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