MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. The document contains numerous embedded URLs that point to various domains, many of which appear to be part of a link farm designed to redirect users to potentially malicious content. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' strongly suggests this is a tactic to distribute malware or phishing content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9968
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://smidgel.ru/uplcv?utm_term=thermal+physics+book+for+bsc+pdf PDF link annotation
- http://shengnabei.com/uploadfile/file///2021090106290966.pdfIn PDF document text
- http://www.syrahresources.com.au/application/third_party/ckfinder/userfiles/files/59104144426.pdfIn PDF document text
- http://ingmarcofaedi.com/userfiles/files/90261342640.pdfIn PDF document text
- https://anandalaya.in/resources/file/56461933092.pdfIn PDF document text
- http://edukoc.net/userData/ebizro_board/file/85409416147.pdfIn PDF document text
- https://www.aaptuk.org/ckfinder/userfiles/files/70924554311.pdfIn PDF document text
- https://mehreganimaging.com/images/upload/files/robukugalosuj.pdfIn PDF document text
- http://nenayu.com/filespath/files/20210920075906.pdfIn PDF document text
- https://binhruamuinanobac.com/wp-content/plugins/super-forms/uploads/php/files/c7adqm9jc9i01pihbuk68dnqdr/dateriritupalale.pdfIn PDF document text
- http://medica-eg.com/userfiles/file/80909157687.pdfIn PDF document text
- http://xn--80aiddhbkcq5bcaz.xn--p1ai/upload/files/19233193803.pdfIn PDF document text
- http://xn--b1adrijbbb.xn--p1ai/upload_picture/34810068047.pdfIn PDF document text
- https://www.medipratik.com/wp-content/plugins/formcraft/file-upload/server/content/files/16139e308ae11b---jagipufonoxaziguxifa.pdfIn PDF document text
- http://nasfthr.com/userfiles/file/xalomusopepuretinogizel.pdfIn PDF document text
- http://eco-building.cz/UserFiles/File/zipofulomudetewu.pdfIn PDF document text
- https://mountmoriahcamp.com/media/ninidafevagimetumeze.pdfIn PDF document text
- http://gpkoaee.ru/ckfinder/userfiles/files/99740292523.pdfIn PDF document text
- http://alessandrobelleseveterinario.eu/userfiles/files/tarilosolenizopoxitoralu.pdfIn PDF document text
- http://siblom.ru/files/upload/file/26396756147.pdfIn PDF document text
- http://canphantich.net/Images_upload/files/13784356157.pdfIn PDF document text
- http://partner-support.net/user_data/userfiles/files/56844694781.pdfIn PDF document text
- http://afro-safari.com/upload/files/biwotoxulozezekizukikux.pdfIn PDF document text
- https://peoplehelppeople.net/uploads/File/38073175011.pdfIn PDF document text
- https://b2cdemo.tickets.com/content/files/peramimuduwirelez.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_off0000ae4f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAE4F | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000c666.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC666 | 10992 bytes |
SHA-256: 5c3dca1cda33350255b5e7b21e94a6137b58404fdb7212672069afa049793111 |
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font_02_sfnt_off0000dfbb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDFBB | 14564 bytes |
SHA-256: 90ea62b6a0a3ba893ad95144de52f2506381009e170ec43fd1309b384a3a7191 |
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