Malicious PDF — malware analysis report

Static analysis result for SHA-256 590244ba2aeb547f…

MALICIOUS

PDF

77.4 KB Created: 2021-01-29 20:10:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: d0a4b677136f3b50cb9b44c85b595716 SHA-1: ba636146dd491027273cc6cdc5ada45f04650917 SHA-256: 590244ba2aeb547f089e5fd9a623e823c8ec7bf7fea49cc25763567b72e27c88
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://jacksth.ru/wb?keyword=differentiate%20asteroids%20meteoroids%20and%20comets PDF link annotation
    • http://cardioactiveitalia.site/83389051389xgvnv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481527/normal_5ff01fb1d2f07.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497688/normal_5fe8fe35d1fb4.pdfIn PDF document text
    • https://cdn.sqhk.co/bitaxukezor/haQicXG/happy_wheels_update_2020.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417806/normal_600fe5ed5dfad.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382784/normal_5ff25f28bf7f1.pdfIn PDF document text
    • https://cdn.sqhk.co/rolaravez/hhahjgh/32025490208.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403808/normal_5ff8b534b8d9f.pdfIn PDF document text
    • https://cdn.sqhk.co/temejikowewa/bihSidn/zijibawu.pdfIn PDF document text
    • https://cdn.sqhk.co/luwivimexu/g9thfic/stickman_skate_battle_apk_hile.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pikegasek.epizy.com/dojoreduxabe.pdfIn PDF document text
    • https://s3.amazonaws.com/bupijila/interference_waves_worksheet.pdfIn PDF document text
    • http://kowotasube.epizy.com/hp_envy_15_beats_audio_software.pdfIn PDF document text
    • https://s3.amazonaws.com/jivamubug/64708757414.pdfIn PDF document text
    • http://dozewejesan.epizy.com/28338870860.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_off0000f2fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2FA 5132 bytes
SHA-256: 7a7de1b3500f3c237162c35449e8e5b8b969467c97b8648504d487f88f104338
font_01_sfnt_off00010462.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10462 10632 bytes
SHA-256: cac5d4563fa3c397fd516b114e8be87061d869f06dda8d8b6f0f87f2e4ac6562