MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The file functions as a link farm, containing numerous URLs that point to compromised WordPress installations. These links likely serve as lures for phishing attacks or to distribute further malware payloads.
Machine Learning
- Nyx PDF Classifier malicious score 0.9970
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://cructi.ru/uplcv?utm_term=neoplastic+proliferation+of+white+blood+cells
- http://topopentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608630763c58c---gomalugixobixanazaso.pdf
- https://encouragingmath.com/wp-content/plugins/super-forms/uploads/php/files/d743ca92bfb6c9b1526b1ae72da68840/pifutaf.pdf
- https://medok18.ru/wp-content/plugins/super-forms/uploads/php/files/83c7bead4f609647f3491365db46571e/mejakijujivikutufumu.pdf
- https://rubin2000-distribuitorshop.ro/userfiles/file/31100455174.pdf
- https://micast.de/wp-content/plugins/super-forms/uploads/php/files/lf58vdkrlkcok9n8r0gkiojjn0/gadabubo.pdf
- https://hotelritariccione.it/wp-content/plugins/formcraft/file-upload/server/content/files/16094bdebb76ee---vixuvu.pdf
- http://www.julitolaschools.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c6106a5513---motigo.pdf
- http://grandchainfamilyfoundation.org/clients/85333/File/87369473002.pdf
- https://tripleccompanies.com/wp-content/plugins/super-forms/uploads/php/files/584254ebf29e0be23f8b5bf797c63014/rezafegazuwasugetojilesa.pdf
- http://podiummoda.ru/userfiles/file/funinep.pdf
- http://www.kevinbrooks.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16077848847958---57905215621.pdf
- https://cffcommunications.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/1608d0484d216d---zavofuro.pdf
- http://togetherwewalkny.org/clients/2/24/2411cc079aa0f0d7fd57f81c6163ecfd/File/patiman.pdf
- http://reversetheclocknow.com/ckfinder/userfiles/files/88836060881.pdf
- https://www.qbuildsoftware.com/wp-content/plugins/super-forms/uploads/php/files/2e3d17523d1df66a2ea6cf4f629445b7/povojobegazivuse.pdf
- https://canvasations.com/wp-content/plugins/super-forms/uploads/php/files/4e2omveikqh7kr872ss3sel467/towolemud.pdf
- https://webhostmurah.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c1f341e8322---dixefozupakugivazizuji.pdf
- http://www.apsetedavisi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083a3b398d4e---nuvanupe.pdf
- https://goactive.hu/wp-content/plugins/super-forms/uploads/php/files/e83747cd82b1d805b48307183fac87d5/radujisetejeg.pdf
- http://kirks-pool.com/wp-content/plugins/formcraft/file-upload/server/content/files/16088a5575d8cf---fonuz.pdf
- http://historia-bfured.hu/userfiles/file/xofuwizin.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_off0000f2e9.binafbeea29fd9fe95b937058880e403963a51fe4fb3312855e8b7d08d827f4f6a1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF2E9 | 16916 bytes |
font_01_sfnt_off00011ef9.bin5b63038e87d74a6f367998bc5c37f0e4c1689ad270416d7e51e144378109b43e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11EF9 | 10920 bytes |
font_02_sfnt_off00013808.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13808 | 16792 bytes |
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