Malicious PDF — malware analysis report

Static analysis result for SHA-256 bdbc08214419a286…

MALICIOUS

PDF

77.0 KB Created: 2021-02-23 13:37:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 4eb2d2b9c4a28d4c5117dce971dc5f1c SHA-1: 2408e097e87f137be2496673ce86012186f0f56c SHA-256: bdbc08214419a286aee01be01353899155ee026bde56d492fc5419072797d717
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/wix?keyword=terraria+mod+apk+free+craft+2018 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4448542/normal_6011ed4d3f1d6.pdfIn PDF document text
    • http://opticsystem.website/aptoide_minecraft_pe_0._14._0kx2b8.pdfIn PDF document text
    • https://cdn.sqhk.co/repudodo/haGY27P/drinking_coffee_causing_anxiety.pdfIn PDF document text
    • http://creditscoretracking.info/566802125449az2w.pdfIn PDF document text
    • https://cdn.sqhk.co/texirova/cjahbvX/hack_jurassic_world_tm_the_game_android.pdfIn PDF document text
    • http://qlemelest.online/cinderella_and_four_knights_eng_subr61vt.pdfIn PDF document text
    • http://lizakoku.22web.org/performance_assessment_comments.pdfIn PDF document text
    • https://cdn.sqhk.co/wadusazilox/jh9pdjh/42253400952.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485705/normal_5fe1d034c6857.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461205/normal_600a177eac9ff.pdfIn PDF document text
    • http://streichpack.online/honeywell_android_scanner_settingsxa829.pdfIn PDF document text
    • http://maykistore.ru/isometrico_instalacion_sanitariadpwrf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pusukobu.epizy.com/nesugag.pdfIn PDF document text
    • http://debalipusafuj.epizy.com/ananda_vikatan_archives.pdfIn PDF document text
    • http://zepibugab.rf.gd/angular_8_admin_template_open_source.pdfIn PDF document text
    • http://biwodonugawodil.rf.gd/nojazifuxasinulabox.pdfIn PDF document text
    • http://nidomuku.rf.gd/buzesenebujizobamili.pdfIn PDF document text
    • http://vosimamasi.epizy.com/ballard_score_indonesia.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_off0000efab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFAB 5624 bytes
SHA-256: 43fd82307e16234cba5c54cf0195b86fe07eec3cf98b6dd25dcda3aa46d8905e
font_01_sfnt_off000102c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102C2 10636 bytes
SHA-256: 5fb27d8628bbb1d46803a5cf70ec0ebef0c84a9395542e4800b54b8aacec60c1