MALICIOUS
96
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file contains numerous embedded URLs that point to compromised WordPress sites and other domains, indicating it functions as a link farm. The ML classifier strongly flagged this PDF as malicious, and the heuristic rules confirm its nature as a link farm on disposable or compromised hosting. The primary purpose appears to be directing users to potentially malicious external sites, likely for phishing or malware delivery.
Machine Learning
- Nyx PDF Classifier malicious score 0.9942
Heuristics 5
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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://laborke.ru/uplcv?utm_term=example+of+plain+folks+commercial
- http://mgmkt.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160967c74ed2e4---41711256744.pdf
- http://ekolojikweb.net/upld/userfiles/file/padixagojiwaxiwas.pdf
- http://abwmarlboropike.com/uploads/files/1743570305.pdf
- https://scalper.ir/data/files/file/95492602832.pdf
- https://buddingheights.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607116f72132e---50244172227.pdf
- http://famillespourstarlight.com/clients/a/a9/a9b42c05011d3bb27e7f7ec2ed30324f/File/nuzisoluboruxibi.pdf
- http://dekoblickfang.de/userfiles/file/nufog.pdf
- https://endoaccessories.com/wp-content/plugins/super-forms/uploads/php/files/14e75p2e96267nh4hqk2npur25/62889605041.pdf
- http://www.deadclan.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160ac5abe75106---fazaderumadewa.pdf
- https://dfa-finanz.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607ec1a702a27---97460879829.pdf
- https://www.fifatravels.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c01ea940580---27378984390.pdf
- https://lenaoyunlar.com/calisma2/files/uploads/nagapugab.pdf
- http://henri-ruch.ch/doc_pub/file/lurelaposijixosemifi.pdf
- https://amenagementsoleil.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094987c439ae---48657100892.pdf
- http://andlupa.com/userfiles/file/muvaniwevamuwazosur.pdf
- https://meccanicagambirasio.it/file/75962866404.pdf
- http://mtsskzy.com/userfiles/file/vaxodiwamag.pdf
- http://artgraf24.pl/userfiles/file/39716440037.pdf
- http://agendatourvietnam.com/hinhanh/file/1047328792.pdf
- http://mfplus.ba/wp-content/plugins/formcraft/file-upload/server/content/files/160b81b110e70d---vojil.pdf
- https://purebodycare.courses/wp-content/plugins/super-forms/uploads/php/files/9n13t3g7jmp65ete549nlcjiar/56895733984.pdf
- https://dazzlin.co.uk/wp-content/plugins/super-forms/uploads/php/files/13d21ac3b6697fb3f21ea5bea5997c42/83546122783.pdf
- http://htwy.com/upload/file/goxid.pdf
- http://aeskulap24h.de/wp-content/plugins/formcraft/file-upload/server/content/files/16075a95450826---wikofegowojatatasuzi.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_off0000fb72.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFB72 | 16792 bytes |
font_01_sfnt_off00011389.bin8cc4cfce5c44ed123cdd660bdd598cdf875f377b061d6d83affafc0992ec08ed |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11389 | 10720 bytes |
font_02_sfnt_off00012c16.bin0e013df396a7610bd8b19dd6f64158153bd022c7091b85c1c8859508218e45de |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12C16 | 17928 bytes |
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