MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier indicating a high probability of maliciousness. It contains a link farm of numerous URLs, many hosted on compromised or disposable domains, suggesting a phishing or SEO poisoning campaign. The presence of embedded URLs and the overall structure point towards an attempt to redirect users to malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
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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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://infrive.ru/uplcv?utm_term=clinical+obstetrics+and+gynaecology+pdf+free+download PDF link annotation
- https://www.habitat-morvan.fr/ckfinder/userfiles/files/80344834767.pdfIn PDF document text
- http://savitaco.com/uploads/images/files/48551627221.pdfIn PDF document text
- https://nusbetaja2.com/contents/files/66888776138.pdfIn PDF document text
- https://mediabandit.com/wp-content/plugins/formcraft/file-upload/server/content/files/16133c3cd93677---67902358634.pdfIn PDF document text
- http://eco-versute.com/app/webroot/ckfinder/userfiles/files/76249444872.pdfIn PDF document text
- https://vinocastillo.hu/editor_up/36146830055.pdfIn PDF document text
- https://www.avenueroadadvertising.com/wp-content/plugins/formcraft/file-upload/server/content/files/16142288392422---90881173706.pdfIn PDF document text
- http://enricobarraco.com/files/pidifimilavuba.pdfIn PDF document text
- https://makenie.com/upload/files/86369449567.pdfIn PDF document text
- http://angelascanu.it/uploads/file/19481166570.pdfIn PDF document text
- http://agataklimowska.pl/userfiles/file/fanajeragezik.pdfIn PDF document text
- http://abwingsva.com/uploads/files/zeninetugefixodugax.pdfIn PDF document text
- http://marketingnews.fr/images/file/kobipegesofil.pdfIn PDF document text
- https://senarathgroup.lk/assets/media/file/ralagiledetozif.pdfIn PDF document text
- https://srsatta.com/ckfinder/userfiles/files/zosapir.pdfIn PDF document text
- http://jfac.kr/ckfinder/userfiles/files/21891055890.pdfIn PDF document text
- http://sallytour.com/FileData/ckfinder/files/20210916_DC3B85B002CC4839.pdfIn PDF document text
- http://iphysiology.ru/upload/ritej.pdfIn PDF document text
- https://economiadecomunion.net/ckfinder/userfiles/files/39888996283.pdfIn PDF document text
- http://les-dvorik.ru/userfiles/file/76525138191.pdfIn PDF document text
- http://cgt-fo-csc.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1613096e3af3b4---3072056019.pdfIn PDF document text
- http://kcde.kr/userfiles/file/26286640633.pdfIn PDF document text
- https://www.kindspring.org/inc/ckfinder/userfiles/files/gojaboxefum.pdfIn PDF document text
- http://tehnicgaz.eu/files/file/26989038065.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_off0000d6b7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD6B7 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000eece.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEECE | 11168 bytes |
SHA-256: d7accfd205b5c18c38052b99f46016101af6c4193408f07fae4bf9abc78331d3 |
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font_02_sfnt_off000108b4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x108B4 | 18232 bytes |
SHA-256: f2abecf4a8b73467e2c3fe3b684e6d43d58971f1cbf461d86bf163872a34743e |
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