MALICIOUS
134
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many of which are hosted on disposable domains and appear to be part of a link farm designed to redirect users to malicious content. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a deliberate attempt to obscure the malicious destination by using many low-quality, distinct hosts. The presence of a 'download button' lure further supports a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9888
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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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://crysiq.ru/uplcv?utm_term=chinese+textbook+pdf+free+download PDF link annotation
- http://ozhelalikram.de/resimler/files/womezonokudilol.pdfIn PDF document text
- https://tfsroanoke.com/home/tfs/public_html/new/ckfinder/userfiles/files/kizufusesonotuwoxisevafo.pdfIn PDF document text
- http://kraciowka.pl/userfiles/file/64852641480.pdfIn PDF document text
- https://ngusacdon.com/upload/files/65938526648.pdfIn PDF document text
- http://inbond-cn.com/userfiles/file/kiwenupixasa.pdfIn PDF document text
- http://flixgolf.com/ckeditor/ckfinder/userfiles/files/jizelomejetofuja.pdfIn PDF document text
- http://na3.it/misc/file/sowurilezagibarovon.pdfIn PDF document text
- https://saftanton.dk/wp-content/plugins/formcraft/file-upload/server/content/files/16141513a15146---nurarutof.pdfIn PDF document text
- https://chmelo.hu/sites/default/files/file/34402626268.pdfIn PDF document text
- http://yongqingtech.com/d/files/xibetovuxitutiwesazi.pdfIn PDF document text
- http://atya.eu/files/file/40566910608.pdfIn PDF document text
- https://tomorrowhubs.com/upload/users/files/vulipupujaluxizide.pdfIn PDF document text
- https://bisnismedsos.com/userfiles/file/jinojeporujivoz.pdfIn PDF document text
- http://barbusci.it/maisUserFile/file/87209038000.pdfIn PDF document text
- http://viquadro.com/userfiles/files/xenomege.pdfIn PDF document text
- http://explosivedevices.ru/media/file/raxitafanufa.pdfIn PDF document text
- https://eric-parnes.shortex.com/ckfinder/userfiles/files/vavokisuvupufuzav.pdfIn PDF document text
- http://fruitvita.com/files/files/46178562404.pdfIn PDF document text
- https://dodatnojamstvo.com/userfiles/file/15415954817.pdfIn PDF document text
- http://lactopad.com/uploads/files/rulepokevusugifekokemi.pdfIn PDF document text
- http://hysansam.com/fckeditor/userfiles/image/58010731734.pdfIn PDF document text
- http://jilienjrubin.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/39347340697.pdfIn PDF document text
- http://sunnysolutions.it/uploads/assets/file/20912369996.pdfIn PDF document text
- https://noks.cz/wp-content/plugins/formcraft/file-upload/server/content/files/16140761017882---34359503812.pdfIn PDF document text
- http://maszyny.pl/userfiles/file/bonudadodim.pdfIn PDF document text
- http://kfoodntea.com/dataroom/file/sijebasosodudozurepuvif.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_off00010239.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10239 | 22440 bytes |
SHA-256: 65156ac19c1af78e9509b935749b9aa296a8af62bf49753ca1617e57f0686c13 |
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font_01_sfnt_off00013c46.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13C46 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0001545d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1545D | 11048 bytes |
SHA-256: 379329a8f4eb76d620e709f2f652d9e855baa574e92b0e902f3fbba4f986b2d9 |
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