MALICIOUS
174
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and multiple external links, including one to an algorithmically-generated URL. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a pattern of hosting disposable content on numerous distinct hosts, suggesting a phishing or malware distribution campaign. The ML classifier and ClamAV detection strongly indicate malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
Heuristics 7
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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 to algorithmically-generated URL high PDF_RANDOM_URL_LINKPDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
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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 https://infrive.ru/uplcv?utm_term=how+secure+is+my+phone PDF link annotation
- https://na-nule.ru/wp-content/plugins/super-forms/uploads/php/files/kdvii9ehvbljb4vu74sinbroj1/xogizinelujotiva.pdfIn PDF document text
- http://henca.com/files/details/file/83490078943.pdfIn PDF document text
- https://inprovitcentroamerica.com/ckfinder/userfiles/files/59785339026.pdfIn PDF document text
- https://ambulatorioveterinariosismondi.eu/file/55601545664.pdfIn PDF document text
- http://ameshamagazine.com/js/upload/files/wulibidej.pdfIn PDF document text
- https://drinkpoint.com/uploads/files/levamirusulisomojewet.pdfIn PDF document text
- http://aviteksural.ru/admin/ckfinder/userfiles/files/nilojapo.pdfIn PDF document text
- https://learningsolution.ca/userfiles/files/41197891178.pdfIn PDF document text
- http://kmconlinecme.com/userfiles/file/60086940862.pdfIn PDF document text
- http://gewoongroen.eu/app/webroot/files/userfiles/files/95354636174.pdfIn PDF document text
- https://ww150001.linebot.net/upfile/files/20210916161417.pdfIn PDF document text
- http://cn-junsheng.com/upload/file///202193112322122.pdfIn PDF document text
- https://www.verpoort-bouw.be/wp-content/plugins/formcraft/file-upload/server/content/files/161358832e3894---68563901827.pdfIn PDF document text
- http://pescepiana.eu/userfiles/files/lexawul.pdfIn PDF document text
- http://aurangabadptti.com/ckeditor/ckfinder/userfiles/files/50465971153.pdfIn PDF document text
- http://showpalmedical.com/userfiles/85456658655.pdfIn PDF document text
- https://mavachhaiphong.com/upload/files/25592333340.pdfIn PDF document text
- http://kaus21.com/userData/board/file/joromevifureziloz.pdfIn PDF document text
- http://school19-zav.ru/userfiles/file/11363834475.pdfIn PDF document text
- http://santabruna.cl/upload/file/murutojixata.pdfIn PDF document text
- http://master-vin.ru/files/file/50502309727.pdfIn PDF document text
- http://luckysim.com/userfiles/file/nugonuvar.pdfIn PDF document text
- https://ecotranslation.ca/upload/editor/file/38791028025.pdfIn PDF document text
- http://jiji.pgo.tw/pic/uploads/files/befulabolevewopomesume.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_off0000e4b9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE4B9 | 17412 bytes |
SHA-256: daa46046c0b7fba074d0c734a2544d258c60491ad5403e46658b9b0f751f1d56 |
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font_01_sfnt_off000111f9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x111F9 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00012a10.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12A10 | 10624 bytes |
SHA-256: 46fb19975fbce548131306f7ae626ad19d22e2d9010d903845d0b563a9a03523 |
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