Malicious PDF — malware analysis report

Static analysis result for SHA-256 16efc66b8f4d2e72…

MALICIOUS

PDF

80.4 KB Created: 2021-03-31 19:07:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: e5870a890e9c274a25c30f7b97dbb6dc SHA-1: 77b1b38fa01bd62a1667cee1a7061f8f8ef6bbfc SHA-256: 16efc66b8f4d2e724fd102c625f4be925f337baf48ebdbdaeb2ea5ca4e8746c6
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The 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.
  • Embedded URL info EMBEDDED_URL
    One 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://lozipotod.ru/strik?utm_term=baby+girl+christmas+outfit+newborn PDF link annotation
    • http://retoxen.mypressonline.com/91290872262.pdfIn PDF document text
    • http://carinsusa.com/a_first_course_in_numerical_methodsbtmc1.pdfIn PDF document text
    • http://funutilesezuvo.iblogger.org/femenipub.pdfIn PDF document text
    • http://return-0.com/piguwovebulivokamalc2sus.pdfIn PDF document text
    • https://cdn.sqhk.co/jemedolena/hang2ic/gulas.pdfIn PDF document text
    • http://tronreserve.online/what_is_the_best_inverter_generator_you_can_buyigpjp.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385217/normal_5fd63ff592404.pdfIn PDF document text
    • http://instapodarok.site/pokemon_sun_and_moon_rom_download_fomqj3d.pdfIn PDF document text
    • https://cdn.sqhk.co/talokelom/S3jbgfE/1767984382.pdfIn PDF document text
    • http://vbruti.site/gafomv9ipv.pdfIn PDF document text
    • https://cdn.sqhk.co/potiribuwuf/ijjhAXi/dekijamiwiti.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425010/normal_6009cd4407f07.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448539/normal_5fd6fea9bcd75.pdfIn PDF document text
    • http://feremujidonigu.getenjoyment.net/reduce_file_size_online_1_mb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451736/normal_6062497930d4f.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/81244502-a014-47f6-93d1-dc324268d0a6/doravosal.pdfIn PDF document text
    • http://zopefunexot.epizy.com/project_cost_estimating_spreadsheet_templates_for_excel.pdfIn PDF document text
    • http://nujebij.onlinewebshop.net/96086702221.pdfIn PDF document text
    • http://bufarudewigufeb.rf.gd/crsu_date_sheet_2018_3rd_sem.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/beeb660a-a484-4d45-91b8-9002c6c2b46e/poulan_pro_42cc_chainsaw_fuel_line.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b57d84f6-12c4-4038-acdb-f69890360d88/igcse_chemistry_chemical_bonding_worksheet.pdfIn PDF document text
    • http://desebavufix.rf.gd/baseline_survey_sample.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.

FilenameKindSourceSize
font_00_sfnt_off0000fce2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCE2 5680 bytes
SHA-256: 1308a74db5bfb95d555f5a24efaadbfde362c15e4dc1dd7cfece4f4c7c1de3ea
font_01_sfnt_off00011023.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11023 10596 bytes
SHA-256: 05f6511192e3bc7a7866ec677848d2f1fc98ceac90d4b77427415da5539537ea

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