MALICIOUS
236
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
T1059.007 JavaScript
This PDF document employs a social engineering lure, instructing the user to install a browser extension or update to view content. It contains numerous external links, many pointing to SEO-optimized PDF files, and one specific redirector URL, 'https://jottigo.ru/aws?utm_term=google+chrome+68+portable', which is likely part of the malicious chain. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for credential harvesting or malware delivery.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
Heuristics 7
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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://jottigo.ru/aws?utm_term=google+chrome+68+portable PDF link annotation
- https://s3.amazonaws.com/fadedosi/camtasia_studio_gratis_italiano.pdfIn PDF document text
- https://cdn.sqhk.co/jarebomu/ijbrjMF/62812090531.pdfIn PDF document text
- https://s3.amazonaws.com/selivuvumepaveb/movedajofupadirilol.pdfIn PDF document text
- https://cdn.sqhk.co/potiribuwuf/eN4ibn2/iron_it_out_idiom.pdfIn PDF document text
- https://s3.amazonaws.com/voxazedisula/windows_7_professional_activator_key_free.pdfIn PDF document text
- https://s3.amazonaws.com/wixatax/arranged_marriage_interview_questions_and_answers.pdfIn PDF document text
- https://bonikelebosobi.weebly.com/uploads/1/3/2/8/132814552/991cf8c30e964.pdfIn PDF document text
- https://tebifuwufarul.weebly.com/uploads/1/3/4/8/134886387/zomij_turep.pdfIn PDF document text
- https://kujufilobi.weebly.com/uploads/1/3/1/4/131482850/xukexidibijolu-biwere-vixenir.pdfIn PDF document text
- https://vomenipof.weebly.com/uploads/1/3/4/5/134585177/rugivurinot.pdfIn PDF document text
- https://rofikilidoxomuk.weebly.com/uploads/1/3/4/0/134017179/1334275.pdfIn PDF document text
- https://zegekeli.weebly.com/uploads/1/3/4/6/134616407/guzixixive-nudowataxug-vomotutojerat-bemotefuwad.pdfIn PDF document text
- https://lusekovipe.weebly.com/uploads/1/3/4/2/134234723/valajukuviket.pdfIn PDF document text
- https://vamarimorojikav.weebly.com/uploads/1/3/4/6/134640123/gaxesabiwujo.pdfIn PDF document text
- https://zanixikowupu.weebly.com/uploads/1/3/1/4/131437740/3104963.pdfIn PDF document text
- https://cdn.sqhk.co/mojerakikav/ihaieid/guide_for_among_us_imposter_mod_apk.pdfIn PDF document text
- https://cdn.sqhk.co/sulubejes/hdijNic/ship_games_simulator_professional_v2._0.pdfIn PDF document text
- https://cdn.sqhk.co/wezupobuwab/tRQiahd/used_police_emergency_lights_for_sale.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e07b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE07B | 5688 bytes |
SHA-256: 12f559f2d7210620b03376d4abe4e3a8f8f202d7fe2c6ae23d1fab27e7ffc6c8 |
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font_01_sfnt_off0000f39f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF39F | 10444 bytes |
SHA-256: ede9e49fb31d12d192fbeba81e0244b0dfae507303411223b69f4d4cb2fe9327 |
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