MALICIOUS
172
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF containing embedded JavaScript and a link farm pointing to compromised CMS upload storage and disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded JavaScript likely facilitates the download of a second-stage payload, and the link farm serves as a lure for users to initiate this download.
Machine Learning
- Nyx PDF Classifier malicious score 0.9912
Heuristics 8
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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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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://avantkart.com/wp-content/plugins/super-forms/uploads/php/files/jvfv16tcv0jsfl3jbs61l79jq1/64295428872.pdf
- http://tantos.jp/js/upload/files/dijoziwunabipiti.pdf
- http://kotolantopeni.cz/file/48288289740.pdf
- http://nadafashionbelt.com/Uploads/file/34041277406.pdf
- http://www.eau-msu.ru/ckfinder/userfiles/files/27303227394.pdf
- http://busankid.com/webfiles/board/file///nijojufidum.pdf
- https://radiosmile.hu/upload/file/78047815341.pdf
- https://www.barrau-philippe-sedeco.fr/ckfinder/userfiles/files/kusanovobi.pdf
- http://www.brennholz-heinlein.de/wp-content/plugins/formcraft/file-upload/server/content/files/161363ab230dd2---41494906895.pdf
- http://clear-es.net/yamituki-n/uploads/files/37727241150.pdf
- http://ibookingkr.com/FileData/ckfinder/files/20210909_F9926F739AABC05D.pdf
- http://www.primalegal.eu/wp-content/plugins/super-forms/uploads/php/files/k7nh2q2222rt115uofmpj3lqd6/37840596719.pdf
- http://armanetti.com/images/kenimaxodugumogeg.pdf
- https://detskeihriska.eu/ckfinder/userfiles/files/76187231988.pdf
- http://www.enredmail.com/templates/files/idCliente_/file/10489433960.pdf
- https://bisnismedsos.com/userfiles/file/76765768596.pdf
- https://chicagoportablexray.com/wp-content/plugins/formcraft/file-upload/server/content/files/16138ac11d0697---55256296732.pdf
- http://eventechsite.com/files/files/92918578970.pdf
- http://alacartedesign.de/userfiles/file/dovigovurimuruvo.pdf
- http://nesemlak.com/test/images/uploads/files/82478709245.pdf
- https://citronel.com/userfiles/files/nujewemadegofasopijuwelu.pdf
- http://atek-ent.com/upload/file/51242114968.pdf
- http://patrick-jardinage.fr/ckfinder/userfiles/files/9479619842.pdf
- http://parzenica-bialka.pl/userfiles/files/30469448674.pdf
- http://www.dnevi-sekretarjev.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1613748980c224---wudovijutuged.pdf
- https://munis-roquesalbes.cat/demo/vilalba/imatges/file/lizetoramira.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=gta+v5+obb+data+file+download
- 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_off0000edbb.bind9f074df66ebc196484267f2afdd791e4a8b3dbbd30d807b588c5bb6911b4073 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEDBB | 18296 bytes |
font_01_sfnt_off00011d4d.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11D4D | 16792 bytes |
font_02_sfnt_off00013564.bin8be2e1e5fea8fca58954ac295eafeaf8953bda9a9df6db37095cbbb5d84b3747 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13564 | 10544 bytes |
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