MALICIOUS
174
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1105 Ingress Tool Transfer
The PDF contains embedded JavaScript and numerous links to external websites, many of which are hosted on disposable domains. The heuristic 'PDF_RANDOM_URL_LINK' and 'PDF_SEO_DISPOSABLE_LINK_FARM' strongly indicate a malicious intent to redirect users to potentially harmful content. The embedded JavaScript likely facilitates the redirection or further payload delivery.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
Heuristics 7
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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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PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINKPDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
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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://synerhu.ru/uplcv?utm_term=equation+of+mole+fraction PDF link annotation
- https://howardsteeves.com/wp-content/plugins/super-forms/uploads/php/files/89afef1b19154be5c7031b6d85d5e14d/52041827621.pdfIn PDF document text
- https://sharjahcements.com/images/bulk_images/files/ribemitisegawak.pdfIn PDF document text
- http://ocung.net/img/files/45312388647.pdfIn PDF document text
- http://tjsijiqing.com/ckfinder/userfiles/files/2021/0915/58ac9f2c7fd45b2764cc23a09738ab47.pdfIn PDF document text
- http://taxiluzern.ch/khurasan/userfiles/files/superob.pdfIn PDF document text
- https://tonymusic.se/UserFiles/files/beriwoxafolawig.pdfIn PDF document text
- http://www.sunarozlem.com.tr/wp-content/plugins/super-forms/uploads/php/files/ic5g8ufmo5nsfpd93chnlm4jt5/67472905973.pdfIn PDF document text
- http://drtamerturan.com/file/natapitigofasotafizumid.pdfIn PDF document text
- https://hchoanglong.vn/userfiles/file/vulizekozatotowib.pdfIn PDF document text
- https://ntct.dz/ckfinder/userfiles/files/13393145794.pdfIn PDF document text
- http://ambulatorioveterinarioilghirlandaio.it/userfiles/files/51142123474.pdfIn PDF document text
- http://thietbiotovn.com/Images_upload/files/34109699834.pdfIn PDF document text
- http://friend5190.xyz/js/ckfinder/userfiles/files/91502296630.pdfIn PDF document text
- http://newbiesites.com/userfiles/file/jexamenilodovinuxovan.pdfIn PDF document text
- https://damiel.eu/userfiles/file/tudovebukakavadufilum.pdfIn PDF document text
- http://budka39.ru/files/zuworaburedurevaj.pdfIn PDF document text
- http://vistobrasil.net/uploads/file/56044411908.pdfIn PDF document text
- https://transdeliveris.lt/userfiles/file/gowosuxumemirowogefu.pdfIn PDF document text
- http://www.ettermanenterprises.com/ckfinder/userfiles/files/67770461951.pdfIn PDF document text
- http://woodlandhills.ilovepokebar.com/uploads/files/76671359944.pdfIn PDF document text
- https://cometgroupinternational.com/ckeditor/ckfinder/userfiles/files/33732325186.pdfIn PDF document text
- http://rotarybrescello.it/userfiles/files/sidumomoxonelibosejil.pdfIn PDF document text
- http://archifolder.com/userfiles/files/22487085043.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_off0000af5d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAF5D | 10560 bytes |
SHA-256: 0f6ce37fe15359ca8fb0a18caa59ed5a326bdc897f83c9e53c9df175fce36f7e |
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font_01_sfnt_off0000c761.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC761 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000df73.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDF73 | 16260 bytes |
SHA-256: c3de208834c1f52d45304394bfec233001854a3cf41693494cb76a6bc3f7644a |
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