Malicious PDF — malware analysis report

Static analysis result for SHA-256 57c557e5020db15f…

MALICIOUS

PDF

66.3 KB Created: 2021-02-25 16:31:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 940f60aaf43174871d910024385273d1 SHA-1: dad10957f67fa96d648677c5d829ef6059d22040 SHA-256: 57c557e5020db15fa6a17a6fcccd2138cc9dae3af2b79c81faa2fc919dd91d4a
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://leonvi.ru/wix?keyword=westbrook+school+department+calendar PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4495531/normal_602e3f5fd8972.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446285/normal_6021f9959313e.pdfIn PDF document text
    • http://dogalijun.scienceontheweb.net/can_an_unmarked_police_car_give_you_a_speeding_ticket_uk.pdfIn PDF document text
    • http://tijudozi.scienceontheweb.net/77718000463.pdfIn PDF document text
    • https://nakafafokebupop.weebly.com/uploads/1/3/1/4/131437029/peliwu.pdfIn PDF document text
    • http://zizodoroluxonaf.sportsontheweb.net/1._what_is_the_general_data_protection_regulation_2018.pdfIn PDF document text
    • https://lidutefavova.weebly.com/uploads/1/3/4/0/134012516/tigulo.pdfIn PDF document text
    • http://fajujefa.getenjoyment.net/34235885163.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456166/normal_6025570ea6c23.pdfIn PDF document text
    • http://xuwajofona.iblogger.org/luralegibiderirom.pdfIn PDF document text
    • https://litukepulaj.weebly.com/uploads/1/3/4/8/134863372/kevoleni_rojiniwivak.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://buloderijapu.epizy.com/how_long_to_cook_fresh_turkey_burgers_on_george_foreman_grill.pdfIn PDF document text
    • https://s3.amazonaws.com/jobavo/statistical_database_in_information_security.pdfIn PDF document text
    • https://s3.amazonaws.com/voxazedisula/dezaf.pdfIn PDF document text
    • https://s3.amazonaws.com/fekife/67143582262.pdfIn PDF document text
    • http://dedapudebofeje.rf.gd/qualities_of_a_good_leader_essay.pdfIn PDF document text
    • http://mexokibalu.epizy.com/top_system_administrator_interview_questions_and_answers.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_off0000c642.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC642 5528 bytes
SHA-256: c5880a93ccedcdaa4b24b7172020d07260094f07de9feb0e61ec4b1f5d4a46f7
font_01_sfnt_off0000d8ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8ED 10224 bytes
SHA-256: 1d0ee9ce0ed4cb1984d5f187eefee84c2eb29996e9aa709c0d15a67df86e2982