MALICIOUS
134
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file is a PDF that contains numerous embedded URLs, many of which are structured as link farms. The ML classifier and ClamAV detection strongly indicate maliciousness, specifically phishing. The presence of external URIs and the link farm heuristic suggest the document is designed to redirect users to malicious content, likely a phishing page or further malware.
Machine Learning
- Nyx PDF Classifier malicious score 0.9917
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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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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Urgency / deadline lure low SE_URGENCY_LUREDocument contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
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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://ketchas.ru/uplcv?utm_term=discrete+mathematics+multiple+choice+questions+with+answers+pdf PDF link annotation
- https://artedelvalle.cl/gal/files/file/vigobutijiligidegatojobe.pdfIn PDF document text
- http://shengyaweb.com/uploadfile/file/2021090614244085.pdfIn PDF document text
- https://foodexgida.com/uploads/files/17897773292.pdfIn PDF document text
- https://www.playitdirect.ca/ckfinder/uploadfiles/files/90011304351.pdfIn PDF document text
- https://mamo-tato.ro/userfiles/file/31489349180.pdfIn PDF document text
- https://taevlingar.se/images/pages/file/vawowuliredojitamam.pdfIn PDF document text
- http://abwessex.com/uploads/files/zasonuvujugudugupe.pdfIn PDF document text
- http://maurovalleferroarchitetto.eu/userfiles/files/28925354703.pdfIn PDF document text
- http://cartonwrappingmachine.com/userfiles/file/zonamijuxujovig.pdfIn PDF document text
- http://thuephotocopytaihanoi.com/upload/files/81999598712.pdfIn PDF document text
- https://invest.pl/userfiles/file/47160334113.pdfIn PDF document text
- https://pgp-puh.hr/fck_media/file/88366663023.pdfIn PDF document text
- https://www.adcgrain.com/wp-content/plugins/super-forms/uploads/php/files/9f160881fa58e4ece749e4631cbd3814/96098902591.pdfIn PDF document text
- http://nbkhjc.com/uploads/202109/file/210905043521356403mponjb61h4oc.pdfIn PDF document text
- http://tokstar.com/_UploadFile/Images/file/49997484937.pdfIn PDF document text
- http://jplus-ag.com/upload/files/BodyFile__613165D02187B.pdfIn PDF document text
- http://100gastro.cz/soubory/files/zujelogamex.pdfIn PDF document text
- http://naturpix.ch/cmsimages/file/82531503510.pdfIn PDF document text
- http://stonepigments.com/userfiles/file/lowexikokuxenep.pdfIn PDF document text
- https://pastijptoto.com/contents/files/sedetaw.pdfIn PDF document text
- http://daimarconstrucciones.com/images/admin/file/debepabemewuvabal.pdfIn PDF document text
- https://uangraja.com/contents/files/13481258752.pdfIn PDF document text
- https://nyirfa.hu/uploads/files/gejor.pdfIn PDF document text
- http://wakingbeauty.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612fbf194082b---jalezuliregalipigupunut.pdfIn PDF document text
- http://devitohomesorlando.com/userfiles/files/38243217807.pdfIn PDF document text
- http://ckattorneys.net/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/sunokifegasubidunakuj.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_off0000da00.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDA00 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000f217.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF217 | 11216 bytes |
SHA-256: 248659a5ed8cf66e93f5ba153c06444eec31988c66ca967171a80d6404200077 |
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font_02_sfnt_off00010c05.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10C05 | 18088 bytes |
SHA-256: d5ef053c34b188e0f72073247c74c22b0f9472265755a472c54ab79f8a4ac128 |
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