Malicious PDF — malware analysis report

Static analysis result for SHA-256 df73767d67eb8a5a…

MALICIOUS

PDF

73.1 KB Created: 2021-02-27 14:36:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 1cb7cfa588bba6f7eec2a93e5b6bba06 SHA-1: e2fd83e14169a3c79d3ec7b3a009570def3d07b9 SHA-256: df73767d67eb8a5a7768e3120a1080aac39db1ca5fbf7841909affe390534b7e
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://resalured.ru/award?keyword=2006+mercedes+e320+cdi+service+d PDF link annotation
    • https://cdn.sqhk.co/rukugewul/hjaS0Ra/20087431285.pdfIn PDF document text
    • https://cdn.sqhk.co/nejajevafode/jihEjif/88008948913.pdfIn PDF document text
    • http://particulieres-societegenerale.best/99689232221a4308.pdfIn PDF document text
    • http://rankingcoach-apps.com/cyberpunk_2020_wiki_johnny_silverhandfdahh.pdfIn PDF document text
    • https://cdn.sqhk.co/gizoxemovefi/oBy3haE/45167795797.pdfIn PDF document text
    • https://cdn.sqhk.co/vozeseseber/emVjdig/fantasy_premier_league_app_not_showing_points.pdfIn PDF document text
    • https://cdn.sqhk.co/nakunadubux/bNNhggj/zekidopi.pdfIn PDF document text
    • https://cdn.sqhk.co/weruvewo/g3kjgxj/brawl_stars_memes_2020.pdfIn PDF document text
    • http://nekuwagibajese.getenjoyment.net/how_to_clean_the_jets_of_a_whirlpool_tub.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380384/normal_5fe916a751b8c.pdfIn PDF document text
    • https://cdn.sqhk.co/fefamujigip/dgfNBii/52112467081.pdfIn PDF document text
    • http://worelimupuvefam.mywebcommunity.org/47531111316.pdfIn PDF document text
    • http://lezigovedavide.getenjoyment.net/nizul.pdfIn PDF document text
    • http://beautysss.site/99221986455ekzeu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413345/normal_600ba2867022c.pdfIn PDF document text
    • http://juwupexutaval.mywebcommunity.org/96506390203.pdfIn PDF document text
    • https://cdn.sqhk.co/fifapupifig/jjjmmgd/university_of_miami_email_365.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kopolug.myartsonline.com/81034347400.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_off0000e17d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE17D 5400 bytes
SHA-256: 6d07fa4f7fd3f309f86a83a250f173e9e8c435c6ccf9fe6d203a36debfcafbec
font_01_sfnt_off0000f3c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3C5 10348 bytes
SHA-256: 2367f6bd550b8ae0eac2b1d8578247f3993e30084ab585a8479b88ca9b157059