MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains a link farm with numerous URLs, several of which point to compromised WordPress upload directories, indicating a potential phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly suggest malicious intent. The file's structure and URL patterns are consistent with a phishing lure designed to redirect users to malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9953
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://yigang-lin.com/uploads/files/202109041335537105.pdf In PDF document text
- http://daearesort.com/FileData/ckfinder/files/20210916_86184369F6E5CD84.pdfIn PDF document text
- https://merohamro.com/ckfinder/userfiles/files/lewebologed.pdfIn PDF document text
- http://gamboeng.com/assets/ckfinder/userfiles/files/jutifakexuwiruwivuboz.pdfIn PDF document text
- http://foto-recepty.sk/images/fotky/65554442453.pdfIn PDF document text
- https://okazdedziecko.pl/_files/Media/file/49414451374.pdfIn PDF document text
- https://zlato-invest.cz/upload/files/65268460217.pdfIn PDF document text
- https://digireg.lu/upload/koxajutozakaz.pdfIn PDF document text
- https://doxity.ro/ckfinder/userfiles/files/gadafopogerogexadigadolov.pdfIn PDF document text
- https://raljob.com/userfiles/file/fuzegebiwunowarileviwuju.pdfIn PDF document text
- http://mrybalko.ru/files/ruramiluturaxekemowixil.pdfIn PDF document text
- http://7sate.com/filespath/files/20210915195224.pdfIn PDF document text
- http://nj-rshb.com/v15/Upload/file/20219141115573834.pdfIn PDF document text
- https://www.novet.de/wp-content/plugins/formcraft/file-upload/server/content/files/1614067ab85f8f---8899435791.pdfIn PDF document text
- http://police8coop.com/UserFiles/file/65820873287.pdfIn PDF document text
- https://cbdc.co/uploads/ckfinder/userfiles/files/9816541554.pdfIn PDF document text
- http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/161337ebd7f603---40006038165.pdfIn PDF document text
- http://np-laser.com/upload_fck/file/2021-9-12/20210912224510355329.pdfIn PDF document text
- http://anhhieu.vn/hinhanh/file/mitinigulujozoxativimuluk.pdfIn PDF document text
- http://aeskulap24h.de/wp-content/plugins/formcraft/file-upload/server/content/files/16135e4c753a9c---xopenorukeniramenizamun.pdfIn PDF document text
- https://igraonica.me/userfiles/file/vifakuxi.pdfIn PDF document text
- https://konzolstudio.ro/uploaded_files/file/11806540285.pdfIn PDF document text
- https://kstraders.com/userfiles/file/pagawowuki.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/fzgW7-mxBc0/uplcv?utm_term=game+keyboard+android+freePDF 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_off0000c9da.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC9DA | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000e1ec.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE1EC | 17120 bytes |
SHA-256: 47b734998bbf219ffd8aa2cd5c5cc2f1fd9a6e59a61542262adfd8fa7b31cfb1 |
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font_02_sfnt_off00010e4c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10E4C | 10588 bytes |
SHA-256: f21ce7072edecaf72459169cca80ae750a06c787826df44c7abc7ed8f63dc0aa |
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