MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample is identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs pointing to compromised websites, suggesting a phishing or malware distribution scheme. The PDF structure and link farm heuristics further support its role as a lure to external, potentially malicious, resources.
Machine Learning
- Nyx PDF Classifier malicious score 0.9977
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://oniceh.ru/uplcv?utm_term=mammoth+book+of+chess+pdf PDF link annotation
- http://kristiankutschera.de/userfiles/file/80157044021.pdfIn PDF document text
- http://esoftland.com/userfiles/file/83204507836.pdfIn PDF document text
- https://advicezone.org.uk/wp-content/plugins/super-forms/uploads/php/files/h6v9cftf4lum71a3rhre17d924/fejewamigowiwevinivajefun.pdfIn PDF document text
- https://karolinanowak.com/userfiles/file/wigipudowapejarovowosif.pdfIn PDF document text
- http://www.rolstoellift.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614093c494368---67287131495.pdfIn PDF document text
- http://a899.net/userfiles/file/98266668296.pdfIn PDF document text
- https://cometsecurity.in/admin/userfiles/file/1393089146.pdfIn PDF document text
- http://fese.in/ienupdimages/images/files/92589290681.pdfIn PDF document text
- http://sportsbettingconsultants.net/cote_dor_import/admin/ckfinder/userfiles/files/57112363897.pdfIn PDF document text
- http://mtcongnghiepxanh.com/upload/fckimagesfile/kevetepejubebulili.pdfIn PDF document text
- https://holyfamilyhospitals.com/ckfinder/userfiles/files/lovomegowipubojasidekot.pdfIn PDF document text
- http://okeefesreef.com/ckfinder/userfiles/files/lukonumulegibaj.pdfIn PDF document text
- http://konstruktor33.ru/app/webroot/files/files/berisi.pdfIn PDF document text
- http://premiercontractinginc.com/files/file/28388714901.pdfIn PDF document text
- http://schokoladenfontaene.de/idata/xibuposexopakimaxekopi.pdfIn PDF document text
- https://ags-car.com/upload/files/mejutenidami.pdfIn PDF document text
- http://archetipoingegneria.it/userfiles/files/bilafufataki.pdfIn PDF document text
- http://keitbg.com/images/files/titumuwifajesudeji.pdfIn PDF document text
- https://thietbigas.net/media/files/kupukazofuzujine.pdfIn PDF document text
- https://kuni.ro/app/webroot/files/userfiles/files/tanonigu.pdfIn PDF document text
- https://mediabandit.com/wp-content/plugins/formcraft/file-upload/server/content/files/16131b76da6c50---puvologivusofoniwasi.pdfIn PDF document text
- http://6nergy.fr/6nergy/sites/default/user/file/5577432039.pdfIn PDF document text
- http://pinxedien.net/upload/files/libuwujanezikowinudagom.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_off0000de18.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDE18 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000f62f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF62F | 10768 bytes |
SHA-256: 7a0651a85764485fe79c6761f3dafebae1d7140a74eccc5e238064f845db37ad |
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font_02_sfnt_off00010ed3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10ED3 | 16272 bytes |
SHA-256: bf3414ea8591fe601add200f85b476beb0dc14bab9487bc95285f1b2b07ea51f |
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