MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious. It contains numerous external URIs and links to compromised CMS upload storage, suggesting it is part of a link farm designed to redirect users to malicious sites. The presence of embedded URLs and the overall structure indicate a phishing or malware distribution attempt, likely initiated via spearphishing.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
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://inwebjor.ru/uplcv?utm_term=228+bus+timetable
- http://bocghedanang.com/media/ftp/file/detif.pdf
- https://giridhareye.org/ckfinder/userfiles/files/41149044925.pdf
- http://www.sarajevo-inn-grunewald.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b15df6b689---63413476084.pdf
- http://afgventuregroup.com/cfiles/file/xezikuvavuwobofenuka.pdf
- https://ohligschlaeger-berger.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608ceeac725a6---17630617113.pdf
- http://www.fattyweng.com.sg/wp-content/plugins/formcraft/file-upload/server/content/files/16074b6ff40886---55274053343.pdf
- http://www.stallionreadymix.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16079c258a87f1---86599289982.pdf
- http://abpaluso.com/upload/file/68604906412.pdf
- https://autosofortkauf.ch/wp-content/plugins/super-forms/uploads/php/files/0hlcc922mvtjn5cto86ds6id0a/42670994142.pdf
- http://cmtoolsrental.com/user_img/files/11777816739.pdf
- https://technische-dokumentation-hoffmann.com/upload/files/53725887735.pdf
- https://bamor.org/userfiles/file/37877654919.pdf
- https://questyme.ca/userfiles/file/26125806959.pdf
- https://thefencedocumentary.com/adminfiles/file/divopemikometizaka.pdf
- http://9meclinic.com/ckfinder/userfiles/files/xulabalawoxojuko.pdf
- http://xn--b1ahhafccpgkb2bxo.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/92c2e68add5cb16dba6ac24cc7185b29/26543025097.pdf
- https://vansuloi.com/uploads/userfiles/file/fivatagelakalemusinezome.pdf
- https://engravestone.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609cda8a05bf5---fusabute.pdf
- http://mkngsp.ru/upload/files/92123343463.pdf
- http://abacusnancy.com/userfiles/file/bividuxalasivemew.pdf
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160da8bb36f381---67447586180.pdf
- https://propiedades.net/ckfinder/userfiles/files/femode.pdf
- https://simplehome.ro/ckfinder/userfiles/files/63111910299.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_off0000b9c8.binc2d09d2e64e3d28cf72a6566230f5700bd0238b98273c322b779389237fb3cde |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB9C8 | 10416 bytes |
font_01_sfnt_off0000d17a.bin8a36d3d810af5b3ccca3d041809075fe36e48145f01b9177c8e74cc125c5dc69 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD17A | 16416 bytes |
font_02_sfnt_off0000fb97.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFB97 | 16792 bytes |
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