MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous embedded URLs, many of which point to disposable hosting or compromised CMS upload directories, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware delivery. Although no scripts were explicitly extracted, the 'PDF_URI' and 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristics indicate the primary function is to host and distribute links to external malicious sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9973
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://chcial.ru/uplcv?utm_term=lobby+hero+script+pdf PDF link annotation
- https://hondaotohaiphong.vn/upload/files/88329692558.pdfIn PDF document text
- http://www.elsecretodelolivo.com/wp-content/plugins/formcraft/file-upload/server/content/files/161363512a2b81---gekixalalodoxugepibu.pdfIn PDF document text
- http://ketnoikienthuc.com/upload/files/50614917291.pdfIn PDF document text
- http://matrixuniverzum.eu/wp-content/plugins/formcraft/file-upload/server/content/files/16136c4f62a5bb---mufadovezunojixa.pdfIn PDF document text
- https://happyfun.tw/uploads/files/202109130644415461.pdfIn PDF document text
- https://suprastoc.ro/userfiles/file/99090118115.pdfIn PDF document text
- http://clickvay.com/upload/files/4007083228.pdfIn PDF document text
- https://hanakspotrebice.cz/eshop/ckfinder/userfiles/files/vapaxodudu.pdfIn PDF document text
- https://www.frankcapassoandsons.com/wp-content/plugins/formcraft/file-upload/server/content/files/16140d6ba9cf1d---fujewevevopep.pdfIn PDF document text
- http://linza-market.ru/upload/files/navunumanowof.pdfIn PDF document text
- https://baglab.pl/galeria/file/74895373000.pdfIn PDF document text
- https://cargotavio.ru/files/file/zaroniwoxefosubozev.pdfIn PDF document text
- http://www.neoneophytou.com/ckfinder/userfiles/files/78449840383.pdfIn PDF document text
- http://www.aunay-sous-auneau.fr/ckfinder/userfiles/files/61554216394.pdfIn PDF document text
- http://hondasushi.com/uploads/files/xixelawabapotopovaxelib.pdfIn PDF document text
- http://dagmar-e.de/userfiles/file/44332665723.pdfIn PDF document text
- http://guowangcable.com/d/files/kuludelukelodod.pdfIn PDF document text
- https://lokmangal.co.in/wp-content/plugins/super-forms/uploads/php/files/2916386d4fdc0d8a94eeefad16095d37/96076924382.pdfIn PDF document text
- https://seltec.io/images/uploads/files/zuluw.pdfIn PDF document text
- https://eijo.in/ckfinder/userfiles/files/xuzubokiwurajomabufazim.pdfIn PDF document text
- https://estduquebec.com/scripts/php/xenocode/lib/ckfinder/userfiles/files/bilel.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_off0000b3fa.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB3FA | 10616 bytes |
SHA-256: 7544f057498173645eaeda6500ba5d88842b5ff8abb4dc319144f74e81b86144 |
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font_01_sfnt_off0000cc37.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCC37 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000e449.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE449 | 16692 bytes |
SHA-256: a8b3a29c45e481596437535d540069f1d1e69da26b38eb154b8d74a6fdc0fd92 |
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