MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The sample is a PDF file flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier as malicious. It contains numerous embedded URLs, many pointing to disposable domains, suggesting a link farm or phishing lure. The heuristic PDF_SEO_DISPOSABLE_LINK_FARM specifically indicates a non-clustered link farm on disposable hosting, with URLs like http://sberin.xyz/capitalization_worksheets_4th_gradeb7iwu.pdf. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a phishing or malware distribution attempt, likely leveraging social engineering to trick users into visiting malicious sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9995
Heuristics 5
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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 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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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://pelibifir.ru/strik?utm_term=fundamental+english+grammar+fourth+edition+pdf PDF link annotation
- http://sberin.xyz/capitalization_worksheets_4th_gradeb7iwu.pdfIn PDF document text
- http://xalowazejadiv.getenjoyment.net/60808284602.pdfIn PDF document text
- http://rimiripa.mypressonline.com/mcculloch_pro_mac_610_chainsaw_manual.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4498868/normal_6014ba6caf8e1.pdfIn PDF document text
- http://velesvoyage.ru/926310193564oslf.pdfIn PDF document text
- http://ru-dev.xyz/influences_from_the_enlightenment_worksheet_answerszatuh.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4496586/normal_5fcba0d5cfabf.pdfIn PDF document text
- https://cdn.sqhk.co/zivudasexoni/Pwjge89/weather_forecast_for_10_days_uk.pdfIn PDF document text
- http://shopee24.site/viva_video_editor_without_watermark_apke777l.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4485005/normal_60003fdb0c9ed.pdfIn PDF document text
- https://cdn.sqhk.co/matelasoguje/fidzAhb/30758145734.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://uploads.strikinglycdn.com/files/7233b81b-6661-4da6-8228-b18d47a1a984/craftsman_10_inch_portable_table_saw_manual.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/f5e385f5-21e5-49b2-b5ed-23717d1b9fee/navibefewuz.pdfIn PDF document text
- https://937a8a2d-b41a-4163-aff8-eda6db263557.filesusr.com/ugd/21e6f2_cc1ac88ac98745afa931875926de5a81.pdf?index=trueIn PDF document text
- https://ebbb41b5-b8b7-4bfc-9e1b-23e79ad93844.filesusr.com/ugd/5eba67_185074e8b0aa46aaaf38fdccccb8b318.pdf?index=trueIn PDF document text
- https://21e323bd-7fdd-46e9-a6c7-4880e76d7610.filesusr.com/ugd/0a51c1_bbfabcb69f844a79b06f748d17fa9267.pdf?index=trueIn PDF document text
- http://gujimosodaza.myartsonline.com/art_history_volume_2_5th_edition_free.pdfIn PDF document text
- http://gegilifopom.myartsonline.com/bolt_action_game_rules.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
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000fd87.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFD87 | 36316 bytes |
SHA-256: 100eddafcdc080bec36345cf1a9e4cfda93a6d42f2ece461666ecf59a656f9a9 |
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font_01_sfnt_off00016026.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x16026 | 5412 bytes |
SHA-256: 02468594a54ecefaaf21e366b9a8def230e61985d419fd06385ea14e4c9ad826 |
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font_02_sfnt_off00017261.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x17261 | 11512 bytes |
SHA-256: 123dfb8c4fb6be544b38ac65d271047fc55fcffc28fd5b6378b9f2b7464bc402 |
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font_03_sfnt_off000199e5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x199E5 | 16592 bytes |
SHA-256: 77aaf326c667695403b7cf9df05c74aa8d4d55d22fe7864f4f100ae33050220e |
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