MALICIOUS
134
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and a large number of external links, many of which point to PDF files hosted on various domains. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a tactic to obscure malicious intent through a network of redirecting links. The ML classifier and ClamAV detection strongly suggest malicious behavior, likely related to phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9977
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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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://chayka-svg.ru/files/pudijo.pdf In PDF document text
- http://gamboeng.com/assets/ckfinder/userfiles/files/61637259059.pdfIn PDF document text
- http://dorinhawear.com/admin/fckeditor/editor/filemanager/connectors/php/fckeditor/editor/filemanager/connectors/php/userfiles/file/wilimowexikunabesax.pdfIn PDF document text
- http://fujieshubao.com/zk/UploadFile/file/2021090902492173499.pdfIn PDF document text
- http://dekoblickfang.de/userfiles/file/sedetapagelivulani.pdfIn PDF document text
- http://www.dogwoodagility.nl/ckfinder/userfiles/files/pakeforud.pdfIn PDF document text
- http://ffarchitettura.it/userfiles/files/gerumeduvelipipanatobarob.pdfIn PDF document text
- http://ledins.lv/cms/file/87299167163.pdfIn PDF document text
- http://cleangroupbd.com/ck/upload/files/27614588779.pdfIn PDF document text
- http://veterinariacomportamentale.it/userfiles/files/11804970517.pdfIn PDF document text
- http://cnmrobotics.com/files/files/fifasibozabofekef.pdfIn PDF document text
- https://hongmao.tw/uploads/files/202109200529593846.pdfIn PDF document text
- http://gingerwooddesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/161386d52643f3---82670314936.pdfIn PDF document text
- http://indiebookoftheday.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614009149f21d---7701878631.pdfIn PDF document text
- https://ecpa.fr/uploaded/file/tepimup.pdfIn PDF document text
- http://buffagiuseppeinfissi.com/userfiles/files/3543737600.pdfIn PDF document text
- https://labelmarket.eu/data/file/79605302292.pdfIn PDF document text
- http://mama-care.com/UserFiles/file/3691106306.pdfIn PDF document text
- http://due.pt/js/ckfinder/userfiles/files/lobirafazaxapegajom.pdfIn PDF document text
- http://de.ruben.pl/ckfinder/userfiles/files/selurerinabivonitiva.pdfIn PDF document text
- https://daaeportrett.no/upload/file/nabuvo.pdfIn PDF document text
- https://clubesolbra.com/uploads/files/dananotijoruzukogi.pdfIn PDF document text
- http://www.accessibilite-salle-eau.com/ckfinder/userfiles/files/manawitufizawutimama.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=gta+liberty+city+stories+free+download+for+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_off0000d43f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD43F | 17192 bytes |
SHA-256: 7fb28d54feee4cc59b020d561704f1ea9a2d64c1650241cf508636e663d45f7a |
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font_01_sfnt_off00010065.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10065 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0001187c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1187C | 10848 bytes |
SHA-256: 1087b12c11f038914455f99a0f08a668bc76724316bbadbc823e7224f47dc4c1 |
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