MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF document was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan' and an ML classifier indicating maliciousness. The document body, though obfuscated, suggests it is generated by wkhtmltopdf, and the heuristics indicate it functions as a link farm, with many URLs pointing to compromised CMS uploads or disposable hosting. The 'SE_INVOICE_LURE' heuristic further suggests the document's content is designed to trick users into clicking these links, likely for phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9960
Heuristics 7
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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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Fake invoice / payment lure low SE_INVOICE_LUREDocument contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
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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://cructi.ru/uplcv?utm_term=cloze+sentence+worksheet+generator
- http://wksx.top/images/userfiles/file/lepopedik.pdf
- https://webhostmurah.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ad6589538d5---68917533400.pdf
- https://sklep-pinokio.pl/web/uploads/files/25037389638.pdf
- http://wadirumshootingstars.com/userfiles/file///70541857170.pdf
- http://fairbank-ia.org/admin/ckfinder/userfiles/files/18794808644.pdf
- https://www.adilaltinsoy.com/wp-content/plugins/formcraft/file-upload/server/content/files/16074a7c707b77---37145553357.pdf
- https://hainutedecopii.eu/ckfinder/userfiles/files/kinonopotagigozuropedos.pdf
- https://mls.lighting/wp-content/plugins/super-forms/uploads/php/files/9b7f91693a0e9702bbca2cd0ac02d914/wogutesewaz.pdf
- http://eventechsite.com/files/files/neliwa.pdf
- http://moda-minulosti.cz/docs/momin/file/10663823889.pdf
- https://jordanadams.com/ckfinder/userfiles/files/81781728885.pdf
- https://globaltranslation.com/demo/global_translation/beta/userfiles/files/pesavas.pdf
- https://www.ptlittleflower.org/wp-content/plugins/super-forms/uploads/php/files/i0hei0ebksg16o9cp12urqgs7k/wefufaregigu.pdf
- http://qqsbg.net/uploads/file/lulabijezukofifi.pdf
- https://chptravel.ir/data/file/28730895069.pdf
- http://premiumresourcing.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b5283db892---54669830634.pdf
- https://niboparis.com/upload/fckeditor/files/jadogudateramuwo.pdf
- http://france-ex.com/images/blog//file/jibegofiw.pdf
- http://veganogle.es/uploads/ckfinder/files/gadaxiserekifetifo.pdf
- http://escrima-rlp.de/userfiles/file/65469661290.pdf
- https://baohohoanglong.com/userfiles/file/noxatojaw.pdf
- http://rideabikenews.com/user_img/files/bofadujuxexoladefizapapek.pdf
- http://www.ashtralmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070f278a0daa---91923132413.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_off0000da27.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDA27 | 16792 bytes |
font_01_sfnt_off0000f239.bin4d8177d01b0e5ca3630862e034d0a298bd1ce017e3a4777717268dc92bcfda94 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF239 | 17568 bytes |
font_02_sfnt_off0001209a.bin2b0ace27c9f641b38b5ee23bac7232cf0c4ab311dc40b11737bcbbfc0eec87ae |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1209A | 10684 bytes |
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