MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous embedded URLs that form a link farm, directing users to potentially malicious or phishing websites. Heuristics indicate these links are often hosted on compromised CMS uploads or disposable hosting, suggesting a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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://crysiq.ru/uplcv?utm_term=frans+masereel+passionate+journey+pdf PDF link annotation
- https://ezokniga.com/uploads/file/78856130779.pdfIn PDF document text
- http://imobilestore.de/userfiles/file/67444101238.pdfIn PDF document text
- https://jeneifogaszat.hu/cikkdata/files/78308937311.pdfIn PDF document text
- http://vdgairconditioning.nl/wp-content/plugins/formcraft/file-upload/server/content/files/161381e146ceff---nagexoduro.pdfIn PDF document text
- http://le-nora.com/userfiles/file/97458189696.pdfIn PDF document text
- http://stellar-toys.com/ckfinder/userfiles/files/dojad.pdfIn PDF document text
- http://terapie-psi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1613286eb3b07c---50470030150.pdfIn PDF document text
- http://guchen.ru/d/files/391545952.pdfIn PDF document text
- http://leinerpakgelatine.com/survey/userfiles/files/44683405499.pdfIn PDF document text
- http://emanuelarombiarchitetto.eu/userfiles/files/49740971929.pdfIn PDF document text
- http://notariocprietoa.com/notaria/documentos/files/8135801235.pdfIn PDF document text
- http://profisystem.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1612fd568d4bdc---12589709156.pdfIn PDF document text
- https://tonerihned.cz/userfiles/file/zoxawidodekanokowitat.pdfIn PDF document text
- https://seedomoretravel.com/files/files/98648835461.pdfIn PDF document text
- http://sensi-leszno.pl/userfiles/file/tuvixekiza.pdfIn PDF document text
- https://kotypsy.pl/ckfinder/userfiles/files/28724970427.pdfIn PDF document text
- http://aeronautike.com/userfiles/file/nixumafip.pdfIn PDF document text
- https://halead.com/uploadfile/1630818048.pdfIn PDF document text
- https://noithatkuongthinh.com/uploads/files/zosaroxiwovidikurebesoke.pdfIn PDF document text
- https://kangaroovietuc.vn/webroot/img/files/vifakesibepodam.pdfIn PDF document text
- http://8njl.com/userfiles/files/fizaxasufojotilid.pdfIn PDF document text
- https://nistd.in/userfiles/file/21696981687.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_off0000f4e5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF4E5 | 10980 bytes |
SHA-256: 66ffd8af6fa362c8a83261d98b4fdfe7b3d4eb23e29f4591b2aafc47da7bb48c |
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font_01_sfnt_off00010e49.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10E49 | 19704 bytes |
SHA-256: 31d41fab134eba2a159dab304c9f607ffaf312222bb9433ccd51310b6af84a4e |
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font_02_sfnt_off000141a1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x141A1 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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