MALICIOUS
96
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous embedded URLs that form a link farm, with several pointing to compromised WordPress upload storage. The ML classifier strongly indicates maliciousness. While no scripts were directly extracted, the PDF structure and embedded links suggest a lure to potentially malicious websites, possibly as part of a phishing or SEO poisoning campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9965
Heuristics 5
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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://crysiq.ru/uplcv?utm_term=how+to+add+audio+to+screen+recording PDF link annotation
- http://xn--365-pn7mwb654m2qn.com/ckupload/files/wiposu.pdfIn PDF document text
- http://kimkhimientrung.com/uploads/image/files/993889840.pdfIn PDF document text
- http://koddous.com/userfiles/file/jomagoginegopimusoruzel.pdfIn PDF document text
- http://optimaglobal.net/ckupload/files/luwofe.pdfIn PDF document text
- http://terhautz.com/upload_files/files/gimejiri.pdfIn PDF document text
- http://xn--h1aeekk.xn--p1ai/files/file/96590048915.pdfIn PDF document text
- http://www.chinahkcarplate.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613ec93538b35---43374347603.pdfIn PDF document text
- http://gdlianyu.com/uploadfiles/file/94808178487.pdfIn PDF document text
- http://legalinet.eu/userfiles/files/lesejuji.pdfIn PDF document text
- http://rulada.by/upload/editor/files/53858577470.pdfIn PDF document text
- https://dichvumayphoto.vn/webroot/img/files/83744758330.pdfIn PDF document text
- http://www.accessibilite-salle-eau.com/ckfinder/userfiles/files/vomozenuruwegafevu.pdfIn PDF document text
- http://palestraarkadia.it/userfiles/files/denojidipoxirizup.pdfIn PDF document text
- https://apexforestservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/161521c245f77b---zuzosunuxopexusog.pdfIn PDF document text
- http://leaguengn.com/userfiles/file///punimuvobujonewoxedov.pdfIn PDF document text
- http://tantusmarina.com/UserFiles/file/81038110016.pdfIn PDF document text
- https://senesi-sklad.cz/userfiles/file/puzisiposezulolejusalal.pdfIn PDF document text
- http://aztkgb.love-mrt.com/upload/files/pabove.pdfIn PDF document text
- http://technimexvn.com/images/ckeditor/files/47284449211.pdfIn PDF document text
- https://maviet.vn/upload/files/kuniguwunufevenu.pdfIn PDF document text
- http://prodesign31.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1613b1fe85b9c9---15583192267.pdfIn PDF document text
- http://kiavysocina.cz/UserFiles/File/vipanonunudadotegixusobi.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_off0000ad8a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAD8A | 16180 bytes |
SHA-256: e2961b4c6e8771f13bb30ab9ca459d0a6618a162970ce96625a6fbe5103594e0 |
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font_01_sfnt_off0000d675.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD675 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
|||
font_02_sfnt_off0000ee8c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEE8C | 10676 bytes |
SHA-256: 76884581ea3516a3a24b18923761848f80b9e6e6a2ab6aeda13658aeb4bedbe9 |
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