MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous external links, many pointing to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of multiple PDF_URI and PDF_SEO_DISPOSABLE_LINK_FARM heuristics further supports this attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9952
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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://krisoc.ru/uplcv?utm_term=uk+pub+quiz+questions+and+answers
- http://libertyquad72.fr/userfiles/file/zigegovo.pdf
- http://murphysbeads.com/clients/54316/File/ninodunag.pdf
- https://forkidsvietnam.vn/wp-content/plugins/super-forms/uploads/php/files/lok3tf3oumikj7u52qhusnu3ok/datodiwovezolifegadulupo.pdf
- https://teenvolunteerhouston.com/wp-content/plugins/super-forms/uploads/php/files/435397c4d9e83f285063bfd695ef6478/tadokutumupuwofobezokoz.pdf
- http://lifemartrealestateconnect.com/wp-content/plugins/super-forms/uploads/php/files/1m6scq4ji6og1ibocgltqpfcq0/bumerizekit.pdf
- https://c4ir.ae/wp-content/plugins/super-forms/uploads/php/files/78rjvjjl2743cmob9r27ft80q4/dixebirabosasew.pdf
- https://creativesilhouettes.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160a11432e35a9---nufuzapidunirumir.pdf
- https://argekaucuk.com/nbg/upload/files/werogil.pdf
- https://mymovingestimate.com/wp-content/plugins/super-forms/uploads/php/files/aed7e81ee0b2039c881a7d85bcf42c1b/ropole.pdf
- http://melissajacksonmd.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ad99ad5a22e---gekirenu.pdf
- https://asigurareingermania.ro/wp-content/plugins/super-forms/uploads/php/files/qa38u6jn3qlpgm59tf8eee4tmi/fuvutev.pdf
- https://levin-dent.ru/wp-content/plugins/super-forms/uploads/php/files/e93a9dee37e718f4177830e77b991980/niwusomezefiki.pdf
- https://supermagnum-bg.com/userfiles/file/62513779754.pdf
- http://handbook.hu/upload/page/file/vomewote.pdf
- http://philippinesroadshow.com/wp-content/plugins/super-forms/uploads/php/files/6bd1836e17b1e84b661a774ebe31612c/59758344926.pdf
- https://ficsllc.com/wp-content/plugins/super-forms/uploads/php/files/jenh8a2f7uh9m1487laqumchsl/45213653289.pdf
- http://conwaychristian.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a3a27b4d237---sijawidejaver.pdf
- https://www.sblending.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a44128b7e3f---11630703845.pdf
- http://edwardlankin.com/clients/86087/File/43156552168.pdf
- http://www.fullertherapy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a62f339068a---50242406185.pdf
- https://baconbites.com/wp-content/plugins/super-forms/uploads/php/files/2oad6lo26cib4e2b593artcvd1/64046981089.pdf
- http://www.kinoimaging.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160ac29fcbd6c7---36259365166.pdf
- http://suportti.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070cc7edb3b7---16149224450.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_off0000f21c.bind174683a37ba2fc96372e61c747d5fbb92da90aff36ef384f0b2da8e1361f568 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF21C | 17936 bytes |
font_01_sfnt_off0001205e.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1205E | 16792 bytes |
font_02_sfnt_off00013875.bin3c1190a950a5a471d39bd0c037e81a7ed4b90ec27bc9c56b538c404a5e3a916d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13875 | 10968 bytes |
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