MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was detected as malicious by ClamAV and an ML classifier. It functions as a link farm, containing numerous embedded URLs that point to compromised websites, likely intended to lure users into phishing scams or to download further malicious content. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a pattern of using disposable hosting for these links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
Heuristics 6
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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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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://crysiq.ru/uplcv?utm_term=the+swimmer+john+cheever
- https://joyfool.art/wp-content/plugins/super-forms/uploads/php/files/ff6cb106be51506d6efedf5c871ff41c/38901074578.pdf
- https://fastcomputer.vn/wp-content/plugins/super-forms/uploads/php/files/dbb9abc35281b94924438ad0b33c4b24/dujubununidimokozunukijij.pdf
- http://aelma.com/sites/default/userfiles/file/68461149606.pdf
- https://xn----8sbaavnccwq4am.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/8c327b13d8107be439fdbb65b8497e15/74075200267.pdf
- https://www.phoenixdentalacademy.co.uk/wp-content/plugins/super-forms/uploads/php/files/6d9e86a1e8a9c41edef25b7831566a2b/21723714144.pdf
- http://penoplex24.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16084e93153182---nojiwob.pdf
- http://lalitas-thaimassage-spa.de/wp-content/plugins/formcraft/file-upload/server/content/files/16070ec6db1104---26964586798.pdf
- https://minegociomiweb.com/userfiles/file/37426004989.pdf
- http://ranjitabiswas.com/userfiles/files/delemabutosoxu.pdf
- http://www.alquilerbares.com.ar/wp-content/plugins/formcraft/file-upload/server/content/files/16072e5f275ac0---58740772829.pdf
- http://gibson100.com/clients/870224/File/rijuv.pdf
- https://agsposure.org/wp-content/plugins/super-forms/uploads/php/files/a8903c0e72298cdf9d0afffd04fd52ba/risikuretobafu.pdf
- http://hytechplus.com/userfiles/file/13518116741.pdf
- http://thedewakohchang.com/image/upload/File/4171117242.pdf
- https://www.hed-endo.hr/wp-content/plugins/formcraft/file-upload/server/content/files/160a5417a7d541---zemojuwumurimasebilebew.pdf
- https://insights3.com/wp-content/plugins/super-forms/uploads/php/files/6c2b268fd40ef20c8611ee6cb3f1514d/rodowebegomofodemej.pdf
- https://xo-sound.ru/userfiles/file/zugixoxufemu.pdf
- https://www.prestigeautobody.com.au/wp-content/plugins/super-forms/uploads/php/files/85b20074c332975e0f6b0b37bfd683dc/bozafaredurobenexuxapala.pdf
- https://www.hediyevideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8b52ab7ca7---53989596780.pdf
- http://laclonghotel.vn/upload/files/nizeta.pdf
- https://coachtourbusrental.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607151fe99487---80973050395.pdf
- http://centromedicoveterinarioadda.com/userfiles/files/87802593998.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_off00011583.bin8e16653d3d7780bebb2d33d86f26da9d08ab290e0d7457ca28eb50b0fdfc4f4a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11583 | 17228 bytes |
font_01_sfnt_off0001420c.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1420C | 16792 bytes |
font_02_sfnt_off00015a23.bin46d8443ff66772b8b697301edf6bece0916ec0f4b83d05136d76531211f4eb6c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x15A23 | 10432 bytes |
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