MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample was detected as a malicious PDF by ClamAV and an ML classifier. It contains numerous external URIs, many of which point to disposable hosting and appear to be part of a link farm, suggesting a phishing or malware distribution lure. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic further supports this, indicating a tactic to obscure the true destination or spread malicious links across multiple domains. No scripts were extracted, but the overall structure and heuristics point to a phishing or redirection attack.
Machine Learning
- Nyx PDF Classifier malicious score 0.9977
Heuristics 5
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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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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://medvor.ru/uplcv?utm_term=constitucion+de+la+iafcj+pdf PDF link annotation
- http://impex-italia.it/userfiles/files/34321937765.pdfIn PDF document text
- http://www.hzkontejnery.cz/ckfinder/userfiles/files/29413752480.pdfIn PDF document text
- http://mas.vacations/wp-content/plugins/formcraft/file-upload/server/content/files/16144ba4663a73---sulegamexenel.pdfIn PDF document text
- http://hoanggiaphatstone.com/upload/files/kuwuxikaketigomiko.pdfIn PDF document text
- https://deshpanday.com/ckfinder/userfiles/files/9592449832.pdfIn PDF document text
- http://www.sudeshnamaulik.com/fckimages/file/52910977628.pdfIn PDF document text
- http://knipia.com/userfiles/file/24453549774.pdfIn PDF document text
- http://szkolaprywatnaleszno.pl/userfiles/file/84951617716.pdfIn PDF document text
- http://odnoklassniki-files.ru/images/uploads/files/zeforod.pdfIn PDF document text
- https://pingthye.com/userfiles/files/gogumirajaligenakigunawo.pdfIn PDF document text
- http://amphorabeautyclub.com/campannas/file/45890263304.pdfIn PDF document text
- http://mtkshop.com/images/uploads/file/39795119430.pdfIn PDF document text
- http://at2apigroup3.com/contents/files/83536687386.pdfIn PDF document text
- http://maraulsan.com/ckfinder/userfiles/files/mamavaxajozof.pdfIn PDF document text
- https://rivieresoceanie.com/userfiles/file/magexo.pdfIn PDF document text
- http://graylegalservices.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/16184241938.pdfIn PDF document text
- http://kutscher-customs.de/gfx/userfiles/files/fisatibem.pdfIn PDF document text
- http://objets.immoweiss.lu/userfiles/files/10850828411.pdfIn PDF document text
- http://lex-ter.ru/admin/ckfinder/userfiles/files/wunivawujonewo.pdfIn PDF document text
- http://fence-alarm.com/userfiles/files/fawawa.pdfIn PDF document text
- http://itnetworkconsultingsf.com/helpdesk/app/webroot/img/userfiles/files/nodimolonupo.pdfIn PDF document text
- https://at2-turbo-j3t.com/contents/files/budaposuneb.pdfIn PDF document text
- https://www.aillant-sur-tholon.com/ckfinder/userfiles/files/wedanoxanotoresewu.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_off0000ccab.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCCAB | 10772 bytes |
SHA-256: 8f5b7461f3b96e1ada43a17404e4b6cc1351f0c79777b01c3ecfac4c3f7a30d3 |
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font_01_sfnt_off0000e599.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE599 | 21812 bytes |
SHA-256: 57d106f9aba7ca18b43906b8381e047d6e3131728e6902e0c79ed203f40ea3a5 |
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font_02_sfnt_off00011dcd.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11DCD | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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