MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains numerous links to disposable hosting, identified by the 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic. The 'SE_DOWNLOAD_BUTTON' heuristic suggests a lure to trick users into clicking these links. ClamAV detection and ML classification strongly indicate malicious intent, likely to download a second-stage payload. While no scripts were directly extracted, the PDF structure and link farm indicate a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9913
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://by-express.com/upfiles/editor/files/58934567873.pdf
- http://phanphoiongnhuahoasen.vn/upload/files/19765680217.pdf
- https://dp-engineers.com/admin/userfiles/file/lojizape.pdf
- https://liepasmuiza.lv/userfiles/library/79672016114.pdf
- https://e-room.co/userfiles/file/49002101611.pdf
- http://asesoriagarpe.com/wp-content/plugins/formcraft/file-upload/server/content/files/161329a7b8813c---gagivapakubiv.pdf
- http://3asoft.vn/img/files/kumol.pdf
- https://mundolibre.cl/uploads/userfiles/files/dudaj.pdf
- http://maivietnamesecotati.com/uploads/files/zobavanuzitezuv.pdf
- http://counterreaction.net/wp-content/plugins/formcraft/file-upload/server/content/files/161338d4374d09---wuziluzuduwizodum.pdf
- http://ingegnasrl.com/userfiles/files/jaxusigefidafugizivi.pdf
- http://everintelconsulting.com/upload/file/202109071205128608.pdf
- http://as-eng.biz/userfiles/file/nonanifez.pdf
- https://forssh.com/userfiles/file/3184402986.pdf
- http://slxiang.com/v15/Upload/file/202199227505131.pdf
- https://aguiapromocional.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1613b3a77ce77e---72844807626.pdf
- http://inspirationallabels.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1613d9989abbc5---83040574982.pdf
- https://losaltos.com/wysiwygfiles/file/sosopirajopujomuri.pdf
- https://bosgo.mn/uploads/files/runag.pdf
- http://aptwash.com/userData/ebizro_board/file/5241250427.pdf
- http://discus-rus.ru/upl/file/visurazemosop.pdf
- http://wellfoto.cz/pictures/files/jenozofiridanedokodu.pdf
- http://www.coverseg.com/uploads/ckfinder/files/27583459489.pdf
- https://paperland.bg/uploads/file/finilubafenepogaz.pdf
- http://nenorm.com/files/files/jifewoloduxagosiweku.pdf
- http://kfoodntea.com/dataroom/file/sipikilibeki.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/fzgW7-mxBc0/uplcv?utm_term=watch+boku+no+hero+academia+free
- 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_off0000fc44.binf3db31fb127c0d60bd38e66118c1f52bdce6c26f5c2024a76187475d47679be1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFC44 | 20120 bytes |
font_01_sfnt_off00013138.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13138 | 16792 bytes |
font_02_sfnt_off0001494f.bin69ce462d303cd9c132f22b381de8e1f04dcaf2ccd6c4d04524cf49b34ff7d140 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1494F | 10852 bytes |
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