MALICIOUS
134
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and numerous external URIs, indicating malicious intent. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' strongly suggests the document is designed to redirect users to a large number of disposable domains, a common tactic for phishing or distributing further malware. The ML classifier and ClamAV detection further support the malicious classification.
Machine Learning
- Nyx PDF Classifier malicious score 0.9908
Heuristics 6
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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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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://cructi.ru/uplcv?utm_term=sketching+reciprocal+functions PDF link annotation
- http://miass.realxenon.ru/uploads/files/83005356462.pdfIn PDF document text
- https://maryamghiasi.com/images/upload/files/tubugigowutubim.pdfIn PDF document text
- https://cabinetscounters.com/ckfinder/userfiles/files/45784782415.pdfIn PDF document text
- https://hasekei.jp/userfiles/file/24921977579.pdfIn PDF document text
- http://asfalon.com/__files/file/tibotatonejo.pdfIn PDF document text
- http://wedding-box100.com/uploads/files/202109061554232589.pdfIn PDF document text
- https://intersat.lv/files/file/gonofoxosi.pdfIn PDF document text
- https://kemxoi.vn/app/webroot/files/images/pages/files/witixutogabupusitugurudi.pdfIn PDF document text
- http://versobrokers.eu/userfiles/files/sinuz.pdfIn PDF document text
- http://vitanova-cattery.com/upload/file/zelurubozekukuvezefinem.pdfIn PDF document text
- http://pm-ural.com/uploads/files/xiditas.pdfIn PDF document text
- http://stressmanagement-karriere.de/userfiles/file/radefujimen.pdfIn PDF document text
- https://www.frontierexim.com/wp-content/plugins/super-forms/uploads/php/files/24e6og8tjbfhdjbv1eihocetpl/80277660913.pdfIn PDF document text
- http://centromedicoveterinarioadda.com/userfiles/files/dibaxewenuzizezaxodu.pdfIn PDF document text
- http://elai.kz/upload/2021/10files/211004215509189222lfynk.pdfIn PDF document text
- https://zenit-npk.ru/files/file/vatezukozolanuximufe.pdfIn PDF document text
- http://chhattisgarhsanskritboard.in/sharpinstitute/images/files/28708941954.pdfIn PDF document text
- http://kubablimel.pl/Image/files/48146668223.pdfIn PDF document text
- http://cmorshomecareassociates.org/uploaded_files/userfiles/files/2906246272.pdfIn PDF document text
- http://tnslib.su/userfiles/files/konexifizikizinazug.pdfIn PDF document text
- http://autostyle-japan.com/js/upload/files/fagozosiginoje.pdfIn PDF document text
- https://jaukiaplinka.lt/ckfinder/userfiles/files/60614727397.pdfIn PDF document text
- https://aprenda-atdi.com/uploads/files/sujogij.pdfIn PDF document text
- https://baoyi-chuck.com/ckfinder/userfiles/files/zifefogafexipu.pdfIn PDF document text
- https://actionsporting.com/userfiles/files/zuwotitolewiroduxukoxo.pdfIn PDF document text
- http://woori-tour.kr/FileData/ckfinder/files/20210906_30EE0658AA6BAF03.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_off0000c478.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC478 | 11024 bytes |
SHA-256: 8c08d64d29ccb0a8b358ce57b1b9b71ca0aa099b76e50c3576cfc0f72e718c45 |
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font_01_sfnt_off0000de0d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDE0D | 18536 bytes |
SHA-256: 90b491dd73844b4332e8087a23e16ba3e5e766ab79f6e1ddeaa24b65dc85f3b9 |
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font_02_sfnt_off00010dd1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10DD1 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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