MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, many of which point to PDF files on various domains, suggesting a link farm or redirection mechanism. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic further supports this, indicating a strategy to distribute links across many disposable hosts. While no scripts were explicitly extracted, the nature of the embedded URLs and the PDF structure suggest it's likely used as a lure to direct users to malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
Heuristics 5
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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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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 http://pro-roubenky.cz/UserFiles/File/takesupixab.pdf In PDF document text
- http://prochem.vn/images/uploads/files/lanibawosimavixebawavek.pdfIn PDF document text
- https://thietkeweblongan.com/upload/files/93835616879.pdfIn PDF document text
- http://embody.box8websites.com/ckfinder/userfiles/files/sidibebonume.pdfIn PDF document text
- https://noticky.net/akce/fotky/file/53828235759.pdfIn PDF document text
- http://medica-brno.com/files/76158073118.pdfIn PDF document text
- https://emenu.hu/editor_up/48828287880.pdfIn PDF document text
- http://myblindz.com/fck_user_files/file/kefuxos.pdfIn PDF document text
- http://taigesw.com/upload/files/19415805110.pdfIn PDF document text
- http://vssteel1999.com/ckeditor/userfiles/files/peguz.pdfIn PDF document text
- https://jiu-hang.com/upfiles/editor/files/satazew.pdfIn PDF document text
- http://firstcuwire.com/file_media/file_image/file/fisibepex.pdfIn PDF document text
- https://ihappywash.com/uploads/files/202109131811194799.pdfIn PDF document text
- https://eniedu.com/data/file/20210914130242.pdfIn PDF document text
- http://csc020.com/userfiles/file/20210913034620_gmshh0.pdfIn PDF document text
- http://ei-windykacja.pl/upload/file/nudinunuduvonaw.pdfIn PDF document text
- http://intechsol.kz/wp-content/plugins/formcraft/file-upload/server/content/files/1612f4e2603107---69857817783.pdfIn PDF document text
- http://gabortech.com/admin/file/wezijuwev.pdfIn PDF document text
- https://gencshow.com/upload/ckfinder/files/16214879916.pdfIn PDF document text
- http://eapver.com/upload/ckimg/files/202109081353311421.pdfIn PDF document text
- https://www.kadinlarsitesi.org/wp-content/plugins/formcraft/file-upload/server/content/files/161404e392d4c4---32754803788.pdfIn PDF document text
- http://pm-ural.com/uploads/files/metefavajonur.pdfIn PDF document text
- http://www.britocunhaadvocacia.com.br/home/wp-content/plugins/formcraft/file-upload/server/content/files/16138168d26c85---24611370341.pdfIn PDF document text
- http://caphegiabao.com/upload/fck/file/59758648603.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/BkSY9tpko7c/uplcv?utm_term=asus+t100+androidPDF link annotation
- 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_off0000d8a9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD8A9 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000f0c0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF0C0 | 10320 bytes |
SHA-256: 999a346f7ad532b8d41eb6471d2aefd9c7325008d723a9e3144bf948f5d9c3bb |
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font_02_sfnt_off0001082d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1082D | 19900 bytes |
SHA-256: 6256b50eb3c7b37efd113c2e2d00403fcea099c1cb43d17b65e719cf18d0ab28 |
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