MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The presence of numerous external URIs, many hosted on disposable domains, suggests a link farm designed to redirect users to malicious or phishing sites. The `wkhtmltopdf` authoring application and the embedded URLs point towards a phishing or malware distribution campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9951
Heuristics 5
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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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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=nintendo+ds+bios+download+for+android PDF link annotation
- https://debcopharma.com/userfiles/file/39335965700.pdfIn PDF document text
- http://jongauger.com/userfiles/file/83606541944.pdfIn PDF document text
- https://dsodrecital.com/wp-content/plugins/formcraft/file-upload/server/content/files/16134befe954b3---14724704990.pdfIn PDF document text
- https://sydneystudytour.com/accounting/userfiles/file/zesotisiw.pdfIn PDF document text
- http://www.jindatunnel.com/up_files/file/52988934524.pdfIn PDF document text
- http://taeguektour.com/FileData/ckfinder/files/20210914_90DA23B0A15BF889.pdfIn PDF document text
- http://bridgesonthepark.com/wp-content/plugins/formcraft/file-upload/server/content/files/16138a9ccdf0ff---31508859175.pdfIn PDF document text
- http://rjbmachinery.com/d/files/46898870066.pdfIn PDF document text
- http://lotusburbank.com/uploads/files/62193877393.pdfIn PDF document text
- https://www.prshots.com/ckfinder/userfiles/files/90249993057.pdfIn PDF document text
- https://conviviodihera.it/dati/upload/file/merifugomotijisogizopet.pdfIn PDF document text
- http://gartenstadt-apotheke.com/userfiles/file/muzuduvipifowibugixibukap.pdfIn PDF document text
- https://shidoremicrosys.com/media/vagaritaxojer.pdfIn PDF document text
- http://dalhousieretreat.com/cote_dor_import/admin/ckfinder/userfiles/files/wubidotumuv.pdfIn PDF document text
- http://caythuocnam.org/images/files/janedivufowiwowijodenedop.pdfIn PDF document text
- https://perfecthospital.org/ckfinder/userfiles/files/16907534387.pdfIn PDF document text
- http://slbreakingnews.com/ckfinder/userfiles/files/90744267486.pdfIn PDF document text
- https://lanegarrett.net/userfiles/file/kurifuweligi.pdfIn PDF document text
- https://www.artikel238.nl/emmwebbit/resources/ckfinder/userfiles/files/fajonoselotujanugubajama.pdfIn PDF document text
- http://papierplus.pl/userfiles/file/1082238251.pdfIn PDF document text
- http://lamekatus.ee/uploads/ckeditor/files/84711626255.pdfIn PDF document text
- http://fipjp.com/userfiles/file/9924081671.pdfIn PDF document text
- http://f1-rennsimulatoren.de/userfiles/file/xaziberurikeno.pdfIn PDF document text
- http://hdurmuslar.com/images_upload/files/lanupel.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_off0000bb51.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBB51 | 10552 bytes |
SHA-256: 92ad69bea5e796cffc11850158fa1444355a6e470198c5ee2d089d350c3617a9 |
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font_01_sfnt_off0000d38e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD38E | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000eba0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEBA0 | 17072 bytes |
SHA-256: fe91cec682db5f8a6cf3427872143c25baa24a81ccba371c922f4cca0fcd0117 |
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