MALICIOUS
236
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
T1059.007 JavaScript
This PDF document exhibits characteristics of a phishing lure, specifically a browser extension or update installation scam. It contains a mass of external links, many pointing to SEO-optimized PDF files, and one prominent redirector URL. The ML classifier strongly flagged this PDF as malicious, and ClamAV detected it as a phishing trojan. While no scripts were directly extracted, the PDF structure and embedded links suggest an attempt to trick the user into downloading and executing further malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
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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Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARMSmall PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINKPDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
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Browser extension / update installation lure high SE_BROWSER_INSTALL_LUREDocument tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
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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://druttle.ru/123?utm_term=iso+9001+lead+auditor+training+online+free PDF link annotation
- https://cdn.sqhk.co/zolilobup/ejho5ig/besibedege.pdfIn PDF document text
- https://cdn.sqhk.co/gidenateg/pz90Uji/14924610875.pdfIn PDF document text
- https://pomapufawupufus.weebly.com/uploads/1/3/5/3/135397804/2043875.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4471988/normal_5fc70d27c2b6a.pdfIn PDF document text
- https://cdn.sqhk.co/joduragenep/iibIie2/bowling_islands_rothenfeld.pdfIn PDF document text
- https://wipasajumavadus.weebly.com/uploads/1/3/4/7/134775966/c860110be65.pdfIn PDF document text
- https://diriremipujuna.weebly.com/uploads/1/3/4/2/134265666/8f024b2f968.pdfIn PDF document text
- https://cdn.sqhk.co/dodifufim/geQWicl/chickens_for_sale_in_texas.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4401712/normal_5fea403728da8.pdfIn PDF document text
- https://cdn.sqhk.co/pesasotiro/gihj89J/barber_shops_chicago_open.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4383128/normal_5fd68254d0a7e.pdfIn PDF document text
- https://cdn.sqhk.co/vagizabibo/SHjsmje/learn_to_play_piano_free_lessons.pdfIn PDF document text
- https://cdn.sqhk.co/fopujetoros/aXgjcot/23020682502.pdfIn PDF document text
- https://cdn.sqhk.co/lakekomum/hjbbjgz/aio_launcher_premium.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4495846/normal_600a6c71b86a5.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/popilo/guxovusogamavubapivogak.pdfIn PDF document text
- https://s3.amazonaws.com/vapite/bollywood_action_movies_2018.pdfIn PDF document text
- https://s3.amazonaws.com/lixuduwonifa/rosewakoluv.pdfIn PDF document text
- https://s3.amazonaws.com/wibedubosateg/chicken_little_game_pc_free.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://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000d69a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD69A | 5364 bytes |
SHA-256: 9ae164fb0141f1f276d19b2e80a7e6f09827b3953e2ebee8b554151f01da970b |
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font_01_sfnt_off0000e8e8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE8E8 | 11324 bytes |
SHA-256: d82c9c5ad100da1d4e62ae669651d8b7be2f0384fea28b9ea13828690b7955ca |
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