MALICIOUS
174
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains embedded JavaScript and numerous links to external domains, many of which are hosted on disposable or low-reputation sites. The heuristic 'PDF_RANDOM_URL_LINK' and 'PDF_SEO_DISPOSABLE_LINK_FARM' strongly indicate a malicious intent to redirect users to potentially harmful content. The ML classifier and ClamAV detection further support the malicious classification.
Machine Learning
- Nyx PDF Classifier malicious score 0.9981
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 http://gruppocinofilomarsalese.com/userfiles/files/57756233994.pdf In PDF document text
- http://studiomedicoveterinariobellucci.eu/userfiles/files/17819544777.pdfIn PDF document text
- http://swissies.lt/ckfinder/userfiles/files/29007909793.pdfIn PDF document text
- http://hakasasi.id/userfiles/file/zuvukijiguvoluna.pdfIn PDF document text
- https://autosofortkauf.ch/wp-content/plugins/super-forms/uploads/php/files/g1ukonbujmi76n3lk4kjeehpbj/sejepejawako.pdfIn PDF document text
- https://loyallcanada.ca/editor_files/file/zoladobidixaku.pdfIn PDF document text
- http://www.belladermeestetica.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1613978e1a7b7f---wotukugulivoz.pdfIn PDF document text
- http://mg001.cn/upload_fck/file/2021-9-15/20210915143048846175.pdfIn PDF document text
- http://daiichihr.com/uploads/news_file/48055612605.pdfIn PDF document text
- http://churchontherockuk.org/home/churchontherock1/public_html/userfiles/files/4557398195.pdfIn PDF document text
- http://xn----ftbkdcamitb5h.xn--p1acf/files/fck/file/68901026596.pdfIn PDF document text
- http://radio-salsa.com/php/rs/filesupload/file/34030873106.pdfIn PDF document text
- http://akcjonariusz.com/UserFiles/file/18934620090.pdfIn PDF document text
- http://btfa.tw/upload/files/95086510656.pdfIn PDF document text
- http://ozona.pt/js/fckeditor/editor/filemanager/connectors/wysiwygfiles/file/wuzosanawigowu.pdfIn PDF document text
- http://coumert.com/images/file/rovubasepifulenopew.pdfIn PDF document text
- http://lesen-und-schenken.de/userfiles/files/44531961545.pdfIn PDF document text
- https://volnynaklad.cz/data/file/diwojafozi.pdfIn PDF document text
- http://bsinteriordesigner.com/userfiles/files/tiwenemew.pdfIn PDF document text
- http://cp-tournament.org/ckfinder/userfiles/files/karuz.pdfIn PDF document text
- http://paulgraphics.paulsfashion.in/files/67813099145.pdfIn PDF document text
- http://ymmicro.com/files/files/29139451783.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3CAf4wW3hvY/uplcv?utm_term=super+cloud+apkPDF 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_off0000e004.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE004 | 10312 bytes |
SHA-256: f6005b8db98d02f45c14cc55efeb36b7f0ac38ed995e6bf086cbb4b3af267785 |
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font_01_sfnt_off0000f75c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF75C | 17912 bytes |
SHA-256: 173a5e25001ac8b7416439a316f2b3428a2a7ca9d8b2e2629dfd4b5fb258d6f9 |
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font_02_sfnt_off0001261f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1261F | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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