Malicious PDF — malware analysis report

Static analysis result for SHA-256 9cfac1a3c83885ba…

MALICIOUS

PDF

73.0 KB Created: 2021-02-11 23:50:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 187fd72566c23ec73cef1f894fc91148 SHA-1: 58572f7d13493806e1ac1f459942d2da27302b72 SHA-256: 9cfac1a3c83885ba631bee2ee8db9125ea84ca56f1a26d62eabcbd75548f7e1f
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/wb?keyword=telugu%20movie%20video%20songs%201080p%20free PDF link annotation
    • https://bexusisase.weebly.com/uploads/1/3/4/5/134596812/buzumoref-bebasodon-durex-fijajatetex.pdfIn PDF document text
    • http://vvinorama.fun/scientific_workplace_macwrmr7.pdfIn PDF document text
    • http://pornbustyvids.com/58357700808p3u1.pdfIn PDF document text
    • http://hookup755.fun/geekbench_4._3_apkma8tp.pdfIn PDF document text
    • https://xexibufit.weebly.com/uploads/1/3/0/7/130739933/rodubikelinosik_puzewuka.pdfIn PDF document text
    • https://vabinori.weebly.com/uploads/1/3/4/3/134348027/2ce242e.pdfIn PDF document text
    • http://natlegend.space/that_s_life_in_french_tattooxq1i7.pdfIn PDF document text
    • http://xrootunited.com/car_traffic_racer_gamev9m4d.pdfIn PDF document text
    • http://gravkamen.ru/free_visiting_card_psd_templates1bucr.pdfIn PDF document text
    • http://hotita.fun/79459160902mzx5x.pdfIn PDF document text
    • http://regvoolkim.website/face2face_advanced_second_edition_workbook4h2bd.pdfIn PDF document text
    • http://esportzmlevent.com/31613492354c0kok.pdfIn PDF document text
    • https://pixadodo.weebly.com/uploads/1/3/2/7/132740612/ccc44e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/remuv/negid.pdfIn PDF document text
    • https://s3.amazonaws.com/rexogeguxosix/22162906216.pdfIn PDF document text
    • https://s3.amazonaws.com/doxifuba/90656332297.pdfIn PDF document text
    • https://s3.amazonaws.com/xupovobejanam/75000888778.pdfIn PDF document text
    • https://s3.amazonaws.com/zamuriza/zarovaraketenotixerul.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_off0000df9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF9D 5548 bytes
SHA-256: 7dbbaf98ba92ff74ae0de0f9bf13001ce8485fb57cb9687c55f584539cf61665
font_01_sfnt_off0000f283.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF283 10632 bytes
SHA-256: aaedd5f39586d8bc2c1814e5608fe19d4b6a9e978fe97ed2669ef23391284709