MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The sample was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. Several heuristics point to the document functioning as a link farm, hosting numerous links to potentially compromised websites or disposable domains. The embedded URLs, such as http://zbraneklapka.cz/ckfinder/userfiles/files/diresujogi.pdf, are likely part of a phishing or malware distribution scheme.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
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 http://zbraneklapka.cz/ckfinder/userfiles/files/diresujogi.pdf In PDF document text
- https://osiindia.org/ckfinder/userfiles/files/bajof.pdfIn PDF document text
- https://fotobolfestmeny.hu/mvc/userfiles/file/16508799604.pdfIn PDF document text
- http://caffepontoni.com/uploads/file/sikagijuruxefabulipubo.pdfIn PDF document text
- https://akemi.ro/hirek/file/jawovoko.pdfIn PDF document text
- http://fabiocaronearchitetto.com/userfiles/files/76458220504.pdfIn PDF document text
- http://kondicionery-dzerzhinskij.ru/upload_picture/file/fozorajok.pdfIn PDF document text
- https://seikai.jp/free_images/files/87727417202.pdfIn PDF document text
- https://principesgs.com/userfiles/file/83004457442.pdfIn PDF document text
- http://fu-xin.tw/uploads/files/202109111810527449.pdfIn PDF document text
- http://planetamama.ru/files/file/xovoretivopanuvilog.pdfIn PDF document text
- http://uro-medical.pl/zdjecia/fotki/file/67866767264.pdfIn PDF document text
- http://1mosref.ru/ckfinder/userfiles/files/50159713917.pdfIn PDF document text
- http://ned.ru/uploads/files/41983842430.pdfIn PDF document text
- https://www.vigo.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1613752f383c40---jelofuvazijafi.pdfIn PDF document text
- http://songhandiban.com/uploadfile/file/2021091220071973499.pdfIn PDF document text
- https://joebalogh.ro/imagini_ws/wobifubudikasigijidufiluz.pdfIn PDF document text
- http://ncdesign.it/userfiles/files/tewededekifoxogudide.pdfIn PDF document text
- http://tcgardening.com/userfiles/file/2021091602501073499.pdfIn PDF document text
- http://jiachuankeji.com/upload_fck/file/2021-9-2/20210902213419904985.pdfIn PDF document text
- https://rts-wm.com/ckfinder/userfiles/files/9198063226.pdfIn PDF document text
- http://intelekt.biz/uploads/pages/files/31361972500.pdfIn PDF document text
- http://technestudio.eu/userfiles/files/linateminivowoxevu.pdfIn PDF document text
- http://www.garriagricola.com/wp-content/plugins/formcraft/file-upload/server/content/files/161354c103b173---99642234410.pdfIn PDF document text
- https://phoenixknights.co.uk/wp-content/plugins/super-forms/uploads/php/files/f686ee035c4482578fa34622cf418661/86852680826.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=open+pc+files+on+androidPDF link annotation
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000d5d4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD5D4 | 10540 bytes |
SHA-256: 7975050443b6dcdd8839bcffa60ae18199a8132edca50859c7a530814ac3f181 |
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font_01_sfnt_off0000edea.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEDEA | 17236 bytes |
SHA-256: 1c9908a8806d6b0387bed30cb96c739352d55f23145e78a32849067aeb0a9773 |
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font_02_sfnt_off00011a0f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11A0F | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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