MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. It contains numerous external links, many pointing to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users. The presence of PDF_SEO_DISPOSABLE_LINK_FARM and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM heuristics indicates a tactic to leverage search engine optimization and compromised infrastructure for malicious redirection. While no scripts were explicitly extracted, the nature of the links and the overall detection profile strongly suggest a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9985
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 https://archism.ru/uplcv?utm_term=trap+drum+pattern+pdf
- https://pernambucoimortal.com/imagens/files/76457624752.pdf
- http://sobsai.com/ckfinder/userfiles/files/3666119328.pdf
- http://anthonyellisonfamilyreunion.com/clients/f/ff/ff850d76676c1858bf5e443b7a907d3b/File/33132211000.pdf
- http://escolacaritas.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b8f1860ecc0---vibikaziganosuziziw.pdf
- https://artsketch.ru/wp-content/plugins/super-forms/uploads/php/files/c89f07024c19135f2933d5792cdb1746/18008787404.pdf
- https://engineeredrepinc.com/wp-content/plugins/super-forms/uploads/php/files/746d983ddf27d5d6ecc4e033e54d8d97/simivokotomofoketutobiz.pdf
- http://drinkandshrink.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160d2e91ee9959---dosojuwafadowo.pdf
- https://ifacemount.com/wp-content/plugins/super-forms/uploads/php/files/gaos8vco4vfnraj001925ns9jq/98793611557.pdf
- https://kindliving.org/wp-content/plugins/super-forms/uploads/php/files/tmp/bibetab.pdf
- http://harlit.com/ckfinder/userfiles/files/20210826_085551.pdf
- http://phutunggiahungoto.com/uploads/files/bumeturaperaw.pdf
- http://www.ashtralmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612fedfd27d75---luzapibif.pdf
- https://www.abaco-engineering.it/wp-content/plugins/formcraft/file-upload/server/content/files/160854109479f3---88270780762.pdf
- http://medicaldistri.com/ckfinder_files/files/63188088589.pdf
- http://evabody.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1608ec96a76562---4914774300.pdf
- http://kursadowicz.pl/Upload/file/13034720753.pdf
- http://franzoesischebulldoggen.eu/userfiles/file/pexigurutabekiva.pdf
- http://bensonlandscape.com/editorData/file/55440162097.pdf
- https://bluza-shop.ru/content/File/palazumanalu.pdf
- https://takiminsahada.com/wp-content/plugins/super-forms/uploads/php/files/vchcg0rm5cl4bm42309ln83m2s/vozixedeja.pdf
- https://regenerateacademy.com/file/xujalagozixula.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_off0000dea8.bine93e5a6ea95841a89ee851fae32a89ebcda65a391d35ba4f1d1cda696a911a6d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDEA8 | 17596 bytes |
font_01_sfnt_off00010c1e.bina70c37544bde2f1018aa6bca8996f479f55982cca172c0b45c8dd71ca4c32ef0 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10C1E | 10296 bytes |
font_02_sfnt_off00012342.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12342 | 16792 bytes |
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