MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF file identified as malicious by ML classifiers and ClamAV. It contains numerous external URIs, many of which are hosted on disposable domains and appear to be part of a link farm. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' strongly suggests a malicious intent, likely to lure users to phishing sites or download further malware. No scripts were extracted, but the structure and numerous links point to a phishing or redirection attack.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
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 https://synerhu.ru/uplcv?utm_term=28+usd+to+sgd PDF link annotation
- https://kalashad.com/userfiles/file/dagitofatiwuto.pdfIn PDF document text
- http://wittymall.com/multimedia/userfiles/file/xepemofojiguvajadik.pdfIn PDF document text
- http://weiken-rc.com/upload/files/49264307234.pdfIn PDF document text
- https://fenicia.uy/fenicia.com.uy/uploads/files/vexubadozonit.pdfIn PDF document text
- http://moriefrusca.com/userfiles/files/dudapim.pdfIn PDF document text
- https://www.ventisilva.com.br/ckfinder/userfiles/files/86049491203.pdfIn PDF document text
- http://av72-reklama.ru/userfiles/file/1630627008c7e1a8315717a9cdd8fd.pdfIn PDF document text
- http://thy-environment.com/userfiles/files/tuxobefirij.pdfIn PDF document text
- http://contelex.it/userfiles/files/16984229700.pdfIn PDF document text
- http://xn----ctbguteehkho5h.xn--p1ai/ckfinder/userfiles/files/lebutomapa.pdfIn PDF document text
- http://clevio.biz/fckUpload/file/dexifinifiwuxunixumuda.pdfIn PDF document text
- https://indobaliart.com/sitefiles/file/57592185454.pdfIn PDF document text
- http://rintoyo.com/userfiles/file/5971233839.pdfIn PDF document text
- http://studioghittigargnano.com/userfiles/files/40223799443.pdfIn PDF document text
- http://jnmindia.com/outscapes/admin/ckeditor/uploads/ck/files/51088753482.pdfIn PDF document text
- http://mineraux-et-lithotherapie.fr/ckeditor/upload/files/80800941523.pdfIn PDF document text
- http://casms.org/atts/news-files/file/vojudedobidirinase.pdfIn PDF document text
- https://ou-ravda.com/ckfinder/userfiles/files/15815523125.pdfIn PDF document text
- https://ewms.vn/wp-content/plugins/super-forms/uploads/php/files/89g1jrvd7dl90cfggvpdv84vgm/wuviremepasukiweti.pdfIn PDF document text
- https://path.mn/userfiles/files/62696451341.pdfIn PDF document text
- http://boissee.fr/userfiles/file/pipenokedabunekeli.pdfIn PDF document text
- http://www.sunaryem.com.tr/wp-content/plugins/super-forms/uploads/php/files/shjvn7jggs0dlk42ic0ra3pt04/64878682703.pdfIn PDF document text
- https://mamadona.ru/ckfinder/userfiles/files/dozejota.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_off0000b9f9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB9F9 | 10120 bytes |
SHA-256: 0cfc2334067f23c702bfb4f35f328dc9cb94ada060f8bbbdc72e03a9f3e17a1f |
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font_01_sfnt_off0000d082.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD082 | 18372 bytes |
SHA-256: 459dd3d3a1bf3edeed1be947962af1c2a1d70b5cb2998042f1c5edd30b843640 |
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font_02_sfnt_off0000fff4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFFF4 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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