Malicious PDF — malware analysis report

Static analysis result for SHA-256 803efddcd070b1e5…

MALICIOUS

PDF

64.3 KB Created: 2021-02-23 11:58:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 37e55da9274d22c3abf637da1e72cbaa SHA-1: b449f57e36817c6b03d9bf4e1e26d2faea948808 SHA-256: 803efddcd070b1e5538c57c4c8f3642f9d8b869666366a1da0fd14ea832201fc
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://jacksth.ru/123?utm_term=how+to+change+oil+toro+recycler+lawn+mower PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4443824/normal_5fcaafeb14d28.pdfIn PDF document text
    • https://cdn.sqhk.co/sedazozesufu/g0MNge0/22437620333.pdfIn PDF document text
    • http://gepidudida.iblogger.org/79797664430.pdfIn PDF document text
    • http://tewazezila.66ghz.com/zudovaximomipebilenutisep.pdfIn PDF document text
    • http://sesosorav.iblogger.org/yielding_of_steel_sheets_containing_slits.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wanudag.rf.gd/rs3_beastmaster_durzag_guide.pdfIn PDF document text
    • http://pinezininefos.epizy.com/jesisuwatodarulutabixasag.pdfIn PDF document text
    • http://sonisan.epizy.com/14395828692.pdfIn PDF document text
    • http://mokunir.rf.gd/42950345816.pdfIn PDF document text
    • https://s3.amazonaws.com/padosumifubobo/mexilimozugumoweduve.pdfIn PDF document text
    • http://rixuzomobe.epizy.com/barden_primary_school_uniform.pdfIn PDF document text
    • http://sipitifijuju.epizy.com/lejux.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagoba/food_service_manager_interview_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/purufiz/social_media_icons_html_template.pdfIn PDF document text
    • https://s3.amazonaws.com/wetevali/manual_citroen_c3_aircross_2017.pdfIn PDF document text
    • http://nupejodolet.epizy.com/a_e_i_o_u_worksheet.pdfIn PDF document text
    • http://xajalad.epizy.com/linguaforum_toefl_ibt_core_topic_guide.pdfIn PDF document text
    • http://gaxomin.rf.gd/charge_sheet_format_in_marathi.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_off0000c25b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC25B 5188 bytes
SHA-256: 0064eab156b47b70e696c1126bc6cf61d39938fba792069056fc75099529f0d9
font_01_sfnt_off0000d3f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3F2 9384 bytes
SHA-256: 237c269a4a991a9ba735546be8eead6c77595b272e6049d4792ff1cf68437dfa