MALICIOUS
134
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF file containing embedded JavaScript, which is a common technique for executing malicious code. The PDF also contains numerous external URIs, many of which point to disposable hosting and form a link farm, suggesting an attempt to obscure the final destination or distribute a payload. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware delivery.
Machine Learning
- Nyx PDF Classifier malicious score 0.9976
Heuristics 6
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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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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://nhatngudongkinh.com/upload/ckupload/files/jowaveluxemojesodilarik.pdf In PDF document text
- https://indiantalentjunction.com/milan/media/danuzusat.pdfIn PDF document text
- https://martas.vodrsport.cz/uploads/files/vogobejezeborozu.pdfIn PDF document text
- https://alley.52886.tw/uploads/files/66472226352.pdfIn PDF document text
- http://iuoooo.com/filespath/files/20210911105316.pdfIn PDF document text
- http://villa-carlshorst.de/sites/default/files/file/guwivegab.pdfIn PDF document text
- http://www.bash.cl/media/file/gerevaxopafifeseg.pdfIn PDF document text
- http://www.satit.nrru.ac.th/satit/_Adminis/ckfinder/userfiles/files/tugur.pdfIn PDF document text
- http://ctkupavna.ru/upload/file/35363963468.pdfIn PDF document text
- http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/sgonvc50283ivabj6rfsal4d37/jemimamusogiviwigat.pdfIn PDF document text
- http://cmrivestimenti.com/userfiles/files/20838979947.pdfIn PDF document text
- http://quimis.org/js/ckfinder/userfiles/files/4078048357.pdfIn PDF document text
- https://www.mtiwelding.co.uk/admin/ckfinder/userfiles/files/29246344180.pdfIn PDF document text
- http://golfproradost.cz/webpagebuilder/ckfinder/userfiles/files/jazalajopodesuwal.pdfIn PDF document text
- http://wtmongolia.com/materials/file/64978429377.pdfIn PDF document text
- https://renesens21.com/ressources/upload/files/78595029551.pdfIn PDF document text
- http://www.hptindia.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613cb3bb342f7---50684329779.pdfIn PDF document text
- http://www.oiseaubleu-promo.fr/userfiles/file/bizewojebetukomojewabapi.pdfIn PDF document text
- https://blsautomation.com/ckfinder/userfiles/files/68336094399.pdfIn PDF document text
- http://alda.pl/ckfinder/userfiles/files/vebovurifolemexakin.pdfIn PDF document text
- http://capitolmetrophysicaltherapy.com/userfiles/file/76037308842.pdfIn PDF document text
- http://primethailand.com/ckfinder/userfiles/files/kalukikerepekozik.pdfIn PDF document text
- http://neoneophytou.com/ckfinder/userfiles/files/4794686224.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/GLLx1DTH0VQ/uplcv?utm_term=metabolismo+de+acidos+nucleicos+pdfPDF link annotation
- 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_off0000bfdb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBFDB | 10916 bytes |
SHA-256: 8a14a1ea50ef5cf0fb15ca5a0dbc61ac73b65a276cebfcf3af19127da4cb05da |
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font_01_sfnt_off0000d8e3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD8E3 | 17440 bytes |
SHA-256: b22959da1cccbbea782ceaad1beff67544d2a091a001897c3f9a20d0021957e7 |
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font_02_sfnt_off000104f2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x104F2 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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