MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and numerous external URLs, many of which are hosted on compromised or disposable domains. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a tactic to disguise malicious links within seemingly legitimate content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9981
Heuristics 7
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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=konversi+pdf+ke+excel+online PDF link annotation
- http://s-pack.kr/userfiles/file/20210902195011.pdfIn PDF document text
- https://used-machinetools.ro/app/webroot/files/userfiles/files/66557425784.pdfIn PDF document text
- http://cokhitienvuong.com/uploads/files/3625701121.pdfIn PDF document text
- http://sirinthepgroup.com/userfiles/file/25910620542.pdfIn PDF document text
- http://lsbwg.com/ckfinder/userfiles/files/20210912/1249581140.pdfIn PDF document text
- http://printific.com/images/contentimages/files/94760337157.pdfIn PDF document text
- http://medizator.ru/ckfinder/userfiles/files/48971937180.pdfIn PDF document text
- http://familiehollander.nl/images/uploadedimages/file/miwajewawav.pdfIn PDF document text
- http://efcosmetic.com/uploadfile/files/33939753310.pdfIn PDF document text
- http://df-2.de/images/daten/file/niwapujeripolisu.pdfIn PDF document text
- https://monyetjoget.com/contents/files/norifawojaroditorazaxula.pdfIn PDF document text
- http://totoquynhhuong.com/upload/files/wuroluvavuw.pdfIn PDF document text
- http://h-st.nl/bestanden/files/zogujubisa.pdfIn PDF document text
- http://www.blueoak.fr/image/file/44477057888.pdfIn PDF document text
- http://we2meeting.com/ckfinder/userfiles/publics/files/98211015091.pdfIn PDF document text
- http://www.icodar.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613428668b158---dupogosefodilumujupe.pdfIn PDF document text
- http://ttlengenharia.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1613cc0c7e5d93---nexiwibinakujivaz.pdfIn PDF document text
- http://m-styleauto.com/js/upload/files/sezojivurikinawomifudewam.pdfIn PDF document text
- http://paradisoseminatrici.it/userfiles/files/57957823206.pdfIn PDF document text
- http://generaldistco.com/images/file/kunepopubigov.pdfIn PDF document text
- http://prodesign31.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16137edaa492e9---muzaponibiravexudaligerak.pdfIn PDF document text
- https://thailonghoang.vn/upload/files/95708725527.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_off0000d4f3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD4F3 | 18032 bytes |
SHA-256: 2669bdee3b57fe56865f8b8e44f906fb235de7a1602d990737c181959311ec20 |
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font_01_sfnt_off0001041f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1041F | 10604 bytes |
SHA-256: 36facb313c424c3d03400c9ef0b14e08899d33649e6887e136c3c611ba7cd639 |
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font_02_sfnt_off00011c7e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11C7E | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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