MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains numerous links to compromised WordPress sites, suggesting it is part of a link farm designed to distribute malware. The presence of a 'download button' heuristic further supports a phishing or malware distribution lure. ClamAV detection and ML classification confirm its malicious nature, likely as a phishing or trojan delivery mechanism.
Machine Learning
- Nyx PDF Classifier malicious score 0.9948
Heuristics 7
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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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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=science+class+7th+book
- https://bilbox.es/wp-content/plugins/super-forms/uploads/php/files/7d947defecc07556f277d16e1570d6eb/xefefotegugevusawe.pdf
- http://argra.rs/wp-content/plugins/formcraft/file-upload/server/content/files/16085ee1f5249a---50627843907.pdf
- http://www.hj-bouwt.be/wp-content/plugins/formcraft/file-upload/server/content/files/160e32ccc34c4f---40575945204.pdf
- https://yuktiedu.com/wp-content/plugins/super-forms/uploads/php/files/8c4a26c2a7128c670e5cdd7a23db1530/33917513594.pdf
- http://wildpflanzen-planung.de/file/kakopiwew.pdf
- https://www.dynasil.com/wp-content/plugins/super-forms/uploads/php/files/c6d8d77ca943d2a2f2450bdfdc45db16/joxafibodamuba.pdf
- http://oletrans.sk/editor_uploads/files/gopozepuve.pdf
- https://emmaushuis.org/pages/35234405291.pdf
- http://activesolutionelectric.com/images/file/82157526014.pdf
- https://www.thecandystoresudbury.com/wp-content/plugins/super-forms/uploads/php/files/03klnumt1ng32ghj753vst2nr6/98542597441.pdf
- http://doverhighschoolhalloffame.com/clients/2/2d/2d76883e1086210ef8e2c43836b0327f/File/donokarijinezut.pdf
- https://amalighting.com/wp-content/plugins/super-forms/uploads/php/files/057598ba55aa5597f6bd08b2c539626b/66722719150.pdf
- https://www.etbsupplies.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e9e52b7bc8---95606354409.pdf
- https://djhelaly.com/wp-content/plugins/super-forms/uploads/php/files/8a465d91ae22dae3292d6f9d2354899d/65042796875.pdf
- http://security-m.jp/tool/images/file/buleli.pdf
- https://annjulieskarpmo.com/userfiles/file/2061246150.pdf
- https://www.couleurs-et-jardin.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1609eb7f5415af---vulemirerodozatavikunelig.pdf
- http://rafaelokazakov.com/file/releguporafejafig.pdf
- https://ipcare.nl/wp-content/plugins/super-forms/uploads/php/files/uebnfv4aokup0odgd6vpknedbu/46199677948.pdf
- http://agcslohian.com/userfiles/file/18871210894.pdf
- https://fatheragneliti.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d5a8c61f9d2---53331177720.pdf
- http://chukgoobok.com/files/fckeditor/file/99365707075.pdf
- https://storage-in-motion.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a863e45b2da---mewubojodosejefatu.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_off0000f447.bin467ac6d01fdf069a3fe19d40d8c506b487b0b57a198d3e0e3e58782695c262fb |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF447 | 10584 bytes |
font_01_sfnt_off00010c71.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10C71 | 16792 bytes |
font_02_sfnt_off00012483.binee5adfb57afa20565dfaf638b34bfe1e7248f53e603e543e84cc4c1007d5c49e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12483 | 16864 bytes |
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