MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged by a machine learning classifier and ClamAV as malicious. It contains a large number of links, many pointing to compromised WordPress sites, suggesting it's part of a link farm designed to redirect users to malicious content or phishing pages. The presence of embedded URLs and the nature of the heuristics indicate a likely attempt to deliver a payload or phish credentials.
Machine Learning
- Nyx PDF Classifier malicious score 0.9942
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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Urgency / deadline lure low SE_URGENCY_LUREDocument contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
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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://ketchas.ru/uplcv?utm_term=max+brooks+the+zombie+survival+guide+pdf
- https://ahi.com.ua/wp-content/plugins/super-forms/uploads/php/files/09a303197e4f11eb425d0928478b85c1/81120099752.pdf
- https://www.ergunaygoren.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076c3c7e61ae---nasuwezemijig.pdf
- https://siyata.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/1609285a5caefc---79636625752.pdf
- https://digireg.com/upload/55158072511.pdf
- http://danies.ru/ckfinder/userfiles/files/53317101158.pdf
- https://lea-inc.com/wp-content/plugins/super-forms/uploads/php/files/6f1e90e72879e09984c0886a4a07ad26/82625988789.pdf
- https://www.web2business.pt/wp-content/plugins/formcraft/file-upload/server/content/files/160869f74b496d---32821427879.pdf
- http://bean2beenefamilytree.com/clients/60578/File/jorab.pdf
- http://greece-ex.com/nupapesonatap.pdf
- https://www.nrlandscapes.co.uk/wp-content/plugins/super-forms/uploads/php/files/c506bd1c5c8546f8e63179339df67433/25280047851.pdf
- https://npkfertilizerproduction.com/d/files/gamofapekufego.pdf
- http://kirks-pool.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609038c63ef17---84755122078.pdf
- http://www.stratcareerservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c738d72217---jemevepit.pdf
- http://www.kmclogistics.com/wp-content/plugins/super-forms/uploads/php/files/693a8671f08f7641e36978e9c54ccf6e/5274428092.pdf
- https://mamproducciones.es/wp-content/plugins/formcraft/file-upload/server/content/files/16082af585ad85---xaloj.pdf
- http://tunesistudio.eu/userfiles/files/13482441389.pdf
- https://www.bouldersudbury.org/wp-content/plugins/formcraft/file-upload/server/content/files/160b4373bc46de---tefamuburawovexuvor.pdf
- https://nhaban24h.com.vn/wp-content/plugins/super-forms/uploads/php/files/9aiua35rlguj5qndrd77jmjnkm/zadubinetepopopawajuza.pdf
- https://auf.vn/wp-content/plugins/super-forms/uploads/php/files/ke83su8rbrvovbs0t5acu4ini3/50545786667.pdf
- http://centrons.com/uploaded/file/209315995260d2cb9e28e41.pdf
- http://www.1atlanticfunding.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a6353bd4f30---51496182898.pdf
- http://dossalas.com/wp-content/plugins/super-forms/uploads/php/files/ac66d68bacbc6bc47927f33894d3dfb7/zenodujodavanasejuvikizav.pdf
- http://smithmurdock.com/wp-content/plugins/formcraft/file-upload/server/content/files/160dd738d9c836---85533233160.pdf
- https://devcons.org/uploads/userfiles/files/sopujemagidepinitudop.pdf
- https://www.nexidia.it/wp-content/plugins/super-forms/uploads/php/files/bfae27d7ee4ddc903b3f570b7b6e776d/78208473253.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_off00010c10.binae32ba2de44267a26114b047a2b777794a4c619bb639f9f559d4749dd320b1b2 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10C10 | 18660 bytes |
font_01_sfnt_off00013cbf.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13CBF | 16792 bytes |
font_02_sfnt_off000154d6.bin67c1d1f41803f42714a45e7d176affed1244eadc6b8e6894a9a244d583dd52ef |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x154D6 | 11392 bytes |
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