MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.001 User Execution: Malicious Link
This PDF document was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains a fake CAPTCHA or human verification prompt, designed to trick users into clicking on malicious links. The document also functions as a link farm, pointing to numerous URLs, some of which are hosted on compromised CMS platforms.
Machine Learning
- Nyx PDF Classifier malicious score 0.9912
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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Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHADocument displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
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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://www.potravinyav21.cz/ckfinder/userfiles/files/muxoluvapofukodabeb.pdf
- https://fo-prefectures.com/pages/files/5477406651.pdf
- https://ihappywash.com/uploads/files/202109070914081420.pdf
- http://lnaixi.com/userfiles/file/20210916032142_770257080.pdf
- https://ukmalayalamnews.com/userfiles/file/negukazugulapukixamo.pdf
- http://samtekelektrik.com/files/24535219417.pdf
- https://shian-jin.com/UserFiles/files/gagiwixuledezevanud.pdf
- https://petala.gr/userfiles/file/21420520926.pdf
- https://damiel.eu/userfiles/file/vuvokotutobalu.pdf
- https://doxity.ro/ckfinder/userfiles/files/49466392700.pdf
- http://huyndaicaudien.com/upload/files/dupudejipalunakezibidus.pdf
- https://eurotig.ro/file/mipapijivevuwa.pdf
- http://uran-berlin.com/userfiles/file/vufuwinaruxakinazuvop.pdf
- http://evola.it/userfiles/files/20611041448.pdf
- https://inchiriereelicopterromania.ro/wp-content/plugins/formcraft/file-upload/server/content/files/161359d8c93b23---gorizanofonodutekulijik.pdf
- https://bgg.pirkitpadangas.lt/ckfinder/userfiles/files/jiramukesivekazisedodevez.pdf
- https://km2804.com/ckupload/files/38484762809.pdf
- http://theorientgarden.iorderfoods.com/uploads/files/zarisejuxazutawozajemibu.pdf
- http://extintoresorigen.com/images/editor/21345737787.pdf
- http://print-printonline.com/ckfinder/userfiles/files/13217169071.pdf
- https://www.reliancecareuk.com/wp-content/plugins/super-forms/uploads/php/files/acf07085d8466e0bdefcfa4e6a915789/90414127009.pdf
- https://www.la-melodie-des-saveurs.fr/ckfinder/userfiles/files/lugofowupixakekiremolik.pdf
- https://mttrasportisrl.it/dati/upload/file/nidut.pdf
- http://kstarsmall.net/userfiles/file///pofebirefupokaw.pdf
- https://architektor.ru/uploads/file/69568685860.pdf
- http://lalitas-thaimassage-spa.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613a9eee2a9f4---zejezojo.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=lucky+patcher+android+5
- 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_off0000e816.bindee20b5ab600efbd76492fdbdb73c0404a1c86eb3ba147ec7c7073b9a78977ea |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE816 | 10796 bytes |
font_01_sfnt_off000100fe.bin942a3a4574fc22f943e85a2ce287db484f586bcd1426cade827db89a0fbd1521 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x100FE | 17960 bytes |
font_02_sfnt_off00012f89.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12F89 | 16792 bytes |
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