MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file contains embedded JavaScript and numerous external URIs, many of which point to compromised websites or disposable hosting. The heuristics indicate a link farm designed to redirect users to potentially malicious content, consistent with phishing or malware distribution tactics. The ML classifier and ClamAV detection strongly support its malicious nature.
Machine Learning
- Nyx PDF Classifier malicious score 0.9951
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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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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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://medvor.ru/uplcv?utm_term=usb+tethering+driver+for+mac+os+x PDF link annotation
- http://polesprogettazioni.com/userfiles/files/6691513274.pdfIn PDF document text
- http://www.portofmiamitunnel.com/system/js/back/ckfinder/userfiles/files/73301922764.pdfIn PDF document text
- http://jonme.net/ckupload/files/lotafumobulajelig.pdfIn PDF document text
- https://intelean.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613ba7b6f3739---32594760753.pdfIn PDF document text
- http://xn--9w3b270a7kf.kr/ckfinder/userfiles/files/mosibezi.pdfIn PDF document text
- http://av-jet.ru/userfiles/file/90679460379.pdfIn PDF document text
- https://ruiguoex.com/upfile/files/2021/09/05/rodak.pdfIn PDF document text
- https://detectiveoffice.net/userfiles/file/jiwafiloxawopajosize.pdfIn PDF document text
- http://zabbeleecooking.com/ckfinder/userfiles/files/3127776595.pdfIn PDF document text
- https://bankkartya.hu/js/ckfinder/userfiles/files/39084000490.pdfIn PDF document text
- https://gabinetpro.pl/kosmetyczka/krakow/files/xajuzipigolotilasonir.pdfIn PDF document text
- http://www.gieskestukadoors.nl/ckfinder/files/files/tupidorilu.pdfIn PDF document text
- https://www.caesarstravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/161396bc63fa02---xeros.pdfIn PDF document text
- http://nceed.kr/pds/userfiles/files/55487602412.pdfIn PDF document text
- http://adanateknikservis.web.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1612fd31190e0f---vowadimosuxeb.pdfIn PDF document text
- https://nguoixunghekiev.vn/userfiles/file/rebulo.pdfIn PDF document text
- http://dobre-jaja.com/Upload/file/biviwudep.pdfIn PDF document text
- http://komodovo.ru/upload_picture/7455013709.pdfIn PDF document text
- http://mskgroup-spb.ru/upload/file/tunajuxixulugudep.pdfIn PDF document text
- https://www.geya99.com/ckfinder/userfiles/files/60765990159.pdfIn PDF document text
- http://machulski.com/public/file/70310803933.pdfIn PDF document text
- http://quimis.org/js/ckfinder/userfiles/files/46249553080.pdfIn PDF document text
- https://ngonluathan.vn/images/ckeditor/files/97632756130.pdfIn PDF document text
- https://ce-mi.pl/uploads/userfiles/files/ridedopedekajedulex.pdfIn PDF document text
- 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_off0000b503.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB503 | 20272 bytes |
SHA-256: 15cbf6eea8f9e54ae92a7b4aac7d38e47400706ecd4c1347e10765a9f9758518 |
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font_01_sfnt_off0000e907.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE907 | 11192 bytes |
SHA-256: bbb62267000e160a9dfa44637ba707cccaff7d4646e925b1e51f0d954a68d37e |
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font_02_sfnt_off000102ee.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x102EE | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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