MALICIOUS
66
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file contains numerous embedded URLs, many of which are hosted on disposable domains and appear to be part of a link farm. One prominent URL, 'https://coretry.ru/uplcv?utm_term=singapore+airlines+data+breach', suggests a lure related to a data breach. The ML classifier strongly flagged this PDF as malicious, indicating a high probability of malicious intent. No scripts were extracted, but the sheer volume of suspicious URLs points to a phishing or malware distribution campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9978
Heuristics 4
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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://coretry.ru/uplcv?utm_term=singapore+airlines+data+breach PDF link annotation
- http://vattucongtrinh.com/userfiles/file/gosogurejebivililurokifa.pdfIn PDF document text
- http://ruihuitax.com/files/file/danuvunabo.pdfIn PDF document text
- https://equalitas.es/userfiles/file/varotopopaxaxevav.pdfIn PDF document text
- http://kindervakantieweekdeurne.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1616b0b5767fc5---27040761948.pdfIn PDF document text
- https://jvlegacyhomerepairsmd.com/nbloom/fckuploads/file/11070595108.pdfIn PDF document text
- https://satellietgroep.nl/userfiles/files/gadago.pdfIn PDF document text
- https://apoiotelecom.com/imagens/img_fckeditor/file/zebulexabozukupewu.pdfIn PDF document text
- https://ural-aiti.ru/admin/ckfinder/userfiles/files/80847718195.pdfIn PDF document text
- http://china-hold.com/UploadFile/file/20211017211633384.pdfIn PDF document text
- http://mini-garden.ru/userfiles/file/6002268776.pdfIn PDF document text
- http://janjoling.com/public/ckfinder/userfiles/files/livizonujepaxo.pdfIn PDF document text
- http://kolaykanal.com/userfiles/files/52324967633.pdfIn PDF document text
- http://chrisdepanneservices.com/Sites/cds/files/xarobumafebasejaki.pdfIn PDF document text
- http://ansing.nl/userfiles/file/fupufiri.pdfIn PDF document text
- https://phuketwebstudio.com/ckfinder/userfiles/files/7537847779.pdfIn PDF document text
- https://fentesmakina.com/paket/upload/files/61894770005.pdfIn PDF document text
- http://deccanquest.com/konadnew/userfiles/file/dudozijagerovelofadasi.pdfIn PDF document text
- http://kompassztuki.pl/Image/files/3365481640.pdfIn PDF document text
- http://fabrykakonwersji.pl/wp-content/plugins/super-forms/uploads/php/files/2925dcf1cb88350af0af056defff1f95/95182485290.pdfIn PDF document text
- http://coffee33.ru/archive/file/jadus.pdfIn PDF document text
- https://ms01bet.com/contents/files/xenetujixuxi.pdfIn PDF document text
- http://ysenb.kr/board/file/editor/file/79299220559.pdfIn PDF document text
- http://dlugopis.kbo.pl/ckfinder/userfiles/files/todeki.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_off0000cf85.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCF85 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000e797.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE797 | 18236 bytes |
SHA-256: 6b80f98f61095ca5ad8955b696f57a7a79df7c0c0eec282315e2b30c6cf83dc9 |
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font_02_sfnt_off00011719.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11719 | 11008 bytes |
SHA-256: 65192b00065ffd1a215698869355787f12a46f040456075adfb58b9f7b149f4b |
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