MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file was detected as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains numerous embedded URLs pointing to external PDF files hosted on various domains, suggesting a link farm or redirection mechanism. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a pattern of using disposable hosting for these links, further supporting a malicious intent to direct users to potentially harmful content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
Heuristics 5
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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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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://infrive.ru/uplcv?utm_term=comprehensive+mathematics+textbook+pdf PDF link annotation
- https://abhrian.com/userfiles/files/50328112296.pdfIn PDF document text
- http://chronocertif.com/userfiles/file/61255755768.pdfIn PDF document text
- http://queensparkview.com/image/upload/File/zoniduwogexex.pdfIn PDF document text
- https://webrobogo.hu/kepek/77841925233.pdfIn PDF document text
- https://ipic.vn/userfiles/file/xutalej.pdfIn PDF document text
- http://geo-equipe.it/userfiles/files/tobaxed.pdfIn PDF document text
- http://www.novosib-sport.ru/ckfinder/userfiles/files/zugodefamun.pdfIn PDF document text
- http://celesteandtorsten.wedding/images/file/5569050229.pdfIn PDF document text
- http://epmresearch.org/userfiles/files/60340232517.pdfIn PDF document text
- http://rayocazar.com/images/elfinder-1.1/files/file/93981835966.pdfIn PDF document text
- https://samudra99.com/contents/files/60488326713.pdfIn PDF document text
- https://organicearthfiji.com/documents/file/19934317282.pdfIn PDF document text
- http://ha-sine.com/d/files/46648853321.pdfIn PDF document text
- http://divapharma.com/uploaded/file/patilupefes.pdfIn PDF document text
- http://dynamicyunnan.com/ckfinder/userfiles/files/47864890339.pdfIn PDF document text
- https://shreenathtechnologies.com/userfiles/file/gugulopilo.pdfIn PDF document text
- https://ebal.ro/app/webroot/files/userfiles/files/gidasarebifezag.pdfIn PDF document text
- http://www.juniorcollege.cl/ckfinder/userfiles/files/73546839302.pdfIn PDF document text
- http://multiseal.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/16136248b9e7ae---fupinagubufurujofibemega.pdfIn PDF document text
- http://datacomsystems.cz/userfiles/file/fizupikulevixev.pdfIn PDF document text
- http://samuiluxurytravel.com/Uploads/file/25205333849.pdfIn PDF document text
- http://carrozzeriabosini.net/userfiles/files/39593347672.pdfIn PDF document text
- http://danieldesignpro.com/userfiles/mokapefasumej.pdfIn PDF document text
- http://taiwan-casters.com/userfiles/file/sakamekonefe.pdfIn PDF document text
- https://moyaexpresss.com/ckfinder/userfiles/files/begigoxajowadutubuvis.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_off0000eb78.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEB78 | 11268 bytes |
SHA-256: f43d29ee2b27349e28997012897e51622cad19d668c6b8a7c8f047bc8e8642ef |
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font_01_sfnt_off00010591.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10591 | 17220 bytes |
SHA-256: cde86aca2a4142b557f128838ec5fb09e41bb989ac6a8fa904f9e194e649d118 |
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font_02_sfnt_off0001325c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1325C | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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