MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics indicate it functions as a link farm, directing users to multiple external URLs, some hosted on compromised CMS platforms. The presence of PDF_URI and EMBEDDED_URL heuristics further supports the attack pattern of luring users to external sites, likely for phishing or to download further malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9944
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://queure.ru/uplcv?utm_term=romanovi+knjiga+pdf
- http://bfr-bialapodlaska.pl/userfiles/file/nuwibijenixepase.pdf
- http://grodgolf.com/clients/f/fd/fd83fa7079552abb47853a85229f74c1/File/vunero.pdf
- https://tyeetomsfishing.com/userfiles/file/bizofedenu.pdf
- http://smithandfriendsfamilyreunion.com/clients/d/d0/d05d9bb0b75700e7199fc64e52c62161/File/20543080071.pdf
- http://ritadas.in/userfiles/file/nefavodak.pdf
- https://www.aifimm.it/admin/inc/ckfinder/userfiles/files/15242778390.pdf
- https://mar3ol.com/Files/files/73859862379.pdf
- https://blugarden.eu/file/59104339109.pdf
- http://ericshartman.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/lawudugu.pdf
- https://www.hadlowsecurityshutters.com/wp-content/plugins/super-forms/uploads/php/files/71069ec90855aa393cadfecbe74cc192/47043038271.pdf
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160db61e2cc845---80349553942.pdf
- http://irs-messtechnik.at/upload/barazinifu.pdf
- https://trucraftsmanship.com/wp-content/plugins/formcraft/file-upload/server/content/files/160784504c3bf9---74553088522.pdf
- https://wacee.net/wp-content/plugins/formcraft/file-upload/server/content/files/160adb588667c2---32774643024.pdf
- https://windsbs.biz/files/file/66613498490.pdf
- https://standsimulator.com/ckfinder/userfiles/files/3615604673.pdf
- http://www.icodar.com/wp-content/plugins/formcraft/file-upload/server/content/files/160744627acf75---95160495503.pdf
- https://ipekyolumedya.com/resim_galeri/file/gonelazokowukip.pdf
- http://rudolphalexander.com/uploads/files/sofaxaxamodajuvupaw.pdf
- http://njchemland.com/upload/files/sukuvewivitiwi.pdf
- http://eprdel.cz/userfiles/file/nuvobegeboxagafifudavoze.pdf
- https://novamakine.com/upload/ckfinder/files/65735136044.pdf
- http://scamps.biz/userfiles/file/21918831613.pdf
- http://workprohealth.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608132b43749e---revojozubisus.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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000bf4f.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBF4F | 16792 bytes |
font_01_sfnt_off0000d761.bin63ac1c0d45f0369e9577c3eb8d0e47a1d35adf5f39a1af8d9f049cab9af52840 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD761 | 20320 bytes |
font_02_sfnt_off00010aba.bin9d02148e8ed8d0b920904b338441267013731059fdfb84c7d75897e29fdc3812 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10ABA | 10628 bytes |
font_03_sfnt_off000122bb.binb17e3c388ca520c70044df51a505a8c8de3d1ca9b2e495c629779bc8d31aca59 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x122BB | 16148 bytes |
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