MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous links pointing to various domains, many of which appear to be disposable hosting or compromised CMS uploads, forming a link farm. The presence of a 'download button' heuristic and the ML classifier's high confidence score indicate a malicious intent to direct users to external resources. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports the malicious classification.
Machine Learning
- Nyx PDF Classifier malicious score 0.9917
Heuristics 7
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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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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://oniceh.ru/uplcv?utm_term=persona+5+royal+live+wallpaper
- http://sitoad.com/bbqjoekey/files/202109220150293314.pdf
- https://jancsoalapitvany.hu/ckfinder/userfiles/files/nimujule.pdf
- http://drvision.org/wp-content/plugins/formcraft/file-upload/server/content/files/161445b3f229f4---43273270143.pdf
- https://spbmworld.com/anaeter_capital/siteadmin/userfiles/files/boxaguxamelinowogidamel.pdf
- https://funbugs.ie/files/file/satotawati.pdf
- http://divelife.kz/files/file/99255559656.pdf
- http://richmore.kr/uploadfile/fckeditor/file/29142370324.pdf
- http://metabolit.ru/files/file/79645969181.pdf
- https://enilubricantvn.hoakhanh.vn/uploads/image/files/fazabefinevigobijamomujoj.pdf
- https://5703n1n6999-6a55.com/contents/files/71808960651.pdf
- http://hoya-system.com/uploads/files/202109020537043882.pdf
- https://terracetemayonetim.com/upload/ckfinder/files/39088668239.pdf
- http://hutnia.pl/userfiles/file/tataxo.pdf
- https://xn--78-6kce7dfhb9dwb.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/7646101905a74fe41bac3cc14afef0c5/16140959931.pdf
- http://www.musicmaestrodiscos.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1613e8e712853a---26127411689.pdf
- http://myredm.ru/uploads/file/gikezawupe.pdf
- http://kahasat.cz/data/file/36392376372.pdf
- http://leeclinic.kr/userData/board/file/39436221135.pdf
- http://odnoklassniki-files.ru/images/uploads/files/89454016943.pdf
- https://jpjplumbingandheating.com/FCKeditor/file/nabupewedasanutebo.pdf
- http://wujipacking.tw/upload/files/gufepa.pdf
- http://wang023spa.com/userfiles/202109file/2021090303594070554.pdf
- http://sensor4you.com/fckeditor/editor/filemanager/connectors/php/fckeditor/upload/202109/file/30211909441.pdf
- http://clingac.es/d/files/87604841534.pdf
- http://naphotelbangkok.com/userfiles/files/49657587819.pdf
- http://lawcab.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16146607b0e5fc---tatalisobox.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000d8c1.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD8C1 | 16792 bytes |
font_01_sfnt_off0000f0d8.binef03875e0f5f55ae5bd63af0ce197da2e80f9b244320bfddd93ae45f1972fd77 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF0D8 | 10548 bytes |
font_02_sfnt_off0001091b.bin77bcef5edf135815ff978f4df49cac1f1f3e4af627a8bf0b40e47da65716abc2 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1091B | 17144 bytes |
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