MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous embedded URLs, many of which point to compromised CMS upload directories or disposable hosting, indicating a link farm designed to distribute malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware delivery via these links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9978
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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PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARMPDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
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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=disgaea+4+android PDF link annotation
- https://brihat-group.com/assets/userfiles/files/18365047834.pdfIn PDF document text
- http://agro-vostok.ru/userfiles/file/86793287713.pdfIn PDF document text
- http://finsura-lifedirect.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1613621cfca908---sibodinerok.pdfIn PDF document text
- https://piti.leaddeehub.com/userfiles/files/rulafenitilenumogu.pdfIn PDF document text
- http://biosafety.biz/ckfinder/userfiles/files/94730659906.pdfIn PDF document text
- https://inprovitchile.com/ckfinder/userfiles/files/nitedujewolamokodu.pdfIn PDF document text
- http://1-sanya.com/blog_images/blog_/file/letigalugafamipopalosebi.pdfIn PDF document text
- https://kantankacreative.com/wp-content/plugins/super-forms/uploads/php/files/4e0903ecaf6f023266a0355c5f486926/23357785924.pdfIn PDF document text
- http://spielundlicht.de/content_provider/documents/files/fatulozeniwazidodetiva.pdfIn PDF document text
- https://vespaclubcagliari.com/userfiles/file/99996354286.pdfIn PDF document text
- http://shinaval.ru/userfiles/file/rakogezufut.pdfIn PDF document text
- http://csc0351.com/userfiles/file/20210908183812_5zjvfk.pdfIn PDF document text
- http://polletnv.be/uploads/files/57184244942.pdfIn PDF document text
- http://iviltra.lt/images/files/28550908159.pdfIn PDF document text
- http://electriccityusa.com/images/fck_uploads/file/17661409828.pdfIn PDF document text
- https://china-glass-mosaic.com/userfiles/files/20210907_064440.pdfIn PDF document text
- http://mijneigenlift.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1613097a0cb56d---vuvitodapojaganagekexalo.pdfIn PDF document text
- http://tatugigo.com/ckfinder/userfiles/files/gopalugab.pdfIn PDF document text
- http://rgn2u.com/userfiles/files/fejipusezaxenufeboxoneles.pdfIn PDF document text
- https://uangraja.com/contents/files/76838932915.pdfIn PDF document text
- http://realestatemiami.com/userfiles/files/1714904045.pdfIn PDF document text
- http://njbeihang.com/uploadfile/file///2021090905235645.pdfIn PDF document text
- http://capableapp.com/uploads/files/xojevivali.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_off0000b0d2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB0D2 | 14364 bytes |
SHA-256: f959abfdd2888ea6a1a404ef9d31c0e2263d6ddc477a4bbba62e732144798c32 |
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font_01_sfnt_off0000d4c8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD4C8 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000ecdf.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xECDF | 10356 bytes |
SHA-256: f1f55ae49cf7020bf4edcfd8140d689121d134c563e0ccdd11d731e28f7a584a |
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