MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF sample was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. It contains numerous embedded URLs pointing to compromised WordPress sites and other domains, suggesting it functions as a link farm for phishing or malware distribution. The presence of PDF_URI and PDF_SEO_DISPOSABLE_LINK_FARM heuristics further supports this attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9995
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://medvor.ru/uplcv?utm_term=focus+groups+with+children
- https://chamsocmuihong.com/wp-content/plugins/super-forms/uploads/php/files/nbh3rcj13ls95olhb670k5skr3/37826457607.pdf
- http://montpellier-business-plan.fr/mbp/upload/images/images/upload/ckfinder/lemokanakenisunusuzofuxe.pdf
- http://eviljoy.com/UserFiles/File/66454698833.pdf
- http://miwon.com.vn/app/webroot/uploads/files/63307084934.pdf
- http://misterholidaysanprisco.it/userfiles/files/24001385051.pdf
- https://ce-mi.pl/uploads/userfiles/files/79576683239.pdf
- http://chhsclassof70.com/clients/1/1f/1f6d1b94cf555b90b9f410dfa82aea5f/File/jipamaxifukiwibewetu.pdf
- https://gamletaarnhuset.no/wp-content/plugins/formcraft/file-upload/server/content/files/1607b90dd92de2---sibujefetuden.pdf
- http://starlightcelebre.org/clients/4/43/43e9139217482d7666ce300faf566241/File/kifejose.pdf
- https://www.tai.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160884910bcfda---88913905636.pdf
- http://discoveryenglish.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a9fa860cf39---84976626084.pdf
- http://brandnewgoods.net/userfiles/file/paxorolazetepilolawomu.pdf
- http://paliukenas.lt/i/File/43255537781.pdf
- http://patrick-vallot.com/upload/files/91080657009.pdf
- https://girisimhaber.com/uploads/file/pozukemaxorifo.pdf
- https://bloomeng.com/uploads/79862210442.pdf
- https://devcons.org/uploads/userfiles/files/zapakejegapasavudilivi.pdf
- https://jiu-hang.com/upfiles/editor/files/21188712042.pdf
- http://belgium-ex.com/images/blog//file/94872679418.pdf
- http://abnicum.com/files/file/63320084821.pdf
- https://www.hungryalex.com/wp-content/plugins/super-forms/uploads/php/files/23e568c97c395e59534b174be5ed4d31/85064307202.pdf
- https://joefairless.com/wp-content/plugins/super-forms/uploads/php/files/e5997a495f64c21ffc75ea1ac9da6522/vajogaxuvukaziruxevi.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_off0000e383.binb3c0597555ae8a8dea96bcab68348c70055fc6cc0eae1ff4694fe0fa4efcb923 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE383 | 16752 bytes |
font_01_sfnt_off00010e9f.bin4eb18f8932b4397c7e08949b4cc17687d386bd91a61bd14fc0deaba35af2716e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10E9F | 10796 bytes |
font_02_sfnt_off00012743.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12743 | 16792 bytes |
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