MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and numerous external links, many pointing to potentially compromised or disposable hosting. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a pattern of creating numerous links on distinct, low-reputation hosts, often with UTM parameters, suggesting an attempt to manipulate search engine results or distribute phishing lures. The ML classifier and ClamAV detection strongly indicate malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9980
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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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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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://alley.52886.tw/uploads/files/34715110414.pdf
- https://stellabakingcompany.com/wp-content/plugins/formcraft/file-upload/server/content/files/16130ca83ab5ea---notulurifopap.pdf
- http://lexus-custom.com/js/upload/files/donenaxebo.pdf
- https://www.frontieregypt.com/sites/all/libraries/ckfinder/userfiles/files/57640676734.pdf
- https://galerieportelouise.be/userfiles/files/70255761143.pdf
- https://icicle-mountaineering.ltd.uk/ckfinder/userfiles/files/9732871096.pdf
- http://misterholidaysanprisco.it/userfiles/files/vijametevivewizupejux.pdf
- https://zweefvlieg.net/userfiles/file/bejejinuvawunupotusek.pdf
- http://pho32shabu.com/uploads/files/pijid.pdf
- https://villadorottya.hu/uploads/frontend/files/16001825482.pdf
- https://larioenergy.net/uploads/file/18329485192.pdf
- http://asu.com.vn/wp-content/plugins/super-forms/uploads/php/files/cc3q2m0m6tf901f3duo4cp034v/zezer.pdf
- https://abcelectricalonlineshop.brilliantwebtech.com/userfiles/files/nefijukomuzowidapezogomip.pdf
- http://problemconsulting.com/img/download/files/rawosuwabaxutimipegukiwak.pdf
- http://fk-fudosan.1nino3.com/app/webroot/img/userfiles/files/25922138055.pdf
- http://circuitvietnamcambodge.com/hinhanh/file/buvepikubo.pdf
- http://yas-center.ru/userfiles/file/75402739578.pdf
- http://donauwell.at/userfiles/file/jinanakomotibepogu.pdf
- http://pomelieagency.com/userfiles/files/nabeselakasuxowedif.pdf
- http://hzbmsj.net/images/upload/File/37339586993.pdf
- https://www.inkfactory.pk/wp-content/plugins/formcraft/file-upload/server/content/files/1613569ff7743d---xaleworozaruzajije.pdf
- https://siam-royal-view.ru/data/files/97466957800.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/ngfLrbzwjls/uplcv?utm_term=facetime+android+to+iphone+app
- 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_off0000ed46.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xED46 | 16792 bytes |
font_01_sfnt_off0001055d.bincb9c4baf936c6e3b77056ee87f66584a8c98464b184886100b88d4ca0a190c0c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1055D | 10540 bytes |
font_02_sfnt_off00011d1e.bind54c3d923ba5634f03274723e0cca58a9e39692c481f07efd4f5f6fe8e662556 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11D1E | 19140 bytes |
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