Malicious PDF — malware analysis report

Static analysis result for SHA-256 31f79e060289117a…

MALICIOUS

PDF

69.7 KB Created: 2021-02-28 21:51:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 4bee158ffdbe193fd25ad593f91ce3ce SHA-1: 1840122ca63d3e11f0d5a2da81fd0e5843c689d8 SHA-256: 31f79e060289117a6173e3db016ebb38822b78648752a19173065aacf6acccb3
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://dugedepap.ru/award?keyword=millionaire+next+door+audiobook+free PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4412408/normal_5fef7dd378bb4.pdfIn PDF document text
    • https://cdn.sqhk.co/mewivupa/ghPjfYq/cute_printable_weekly_to_do_list.pdfIn PDF document text
    • http://scandisvet.ru/whats_the_fastest_crochet_stitch08s2r.pdfIn PDF document text
    • http://barbanapoli.moscow/6898480478quu1.pdfIn PDF document text
    • http://zoosalon.org/conceptual_physics_hewitt_answersle9n2.pdfIn PDF document text
    • https://cdn.sqhk.co/jomonufo/haie5jb/cheapest_flights_to_miami_from_nyc.pdfIn PDF document text
    • http://dixojele.22web.org/wasadumavogole.pdfIn PDF document text
    • http://bimoriz.getenjoyment.net/pujib.pdfIn PDF document text
    • https://cdn.sqhk.co/belesobikezi/lhdichg/list_of_all_chris_young_songs.pdfIn PDF document text
    • http://kurekarer.22web.org/26857104920.pdfIn PDF document text
    • http://mowefopovog.mywebcommunity.org/briggs_and_stratton_500_series_158cc_carburetor_adjustment.pdfIn PDF document text
    • http://zegererevez.medianewsonline.com/natelilivagupif.pdfIn PDF document text
    • https://cdn.sqhk.co/ragojagef/aycjcjc/samurai_sudoku_medium_printable.pdfIn PDF document text
    • http://samozanyat.info/chapter_20_oxidation-_reduction_reactions_worksheet48hi2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://navezep.epizy.com/71744524804.pdfIn PDF document text
    • http://wenakukifitazo.rf.gd/zorusejupexoxudomonex.pdfIn PDF document text
    • http://lojabupabavize.onlinewebshop.net/18709384981.pdfIn PDF document text
    • http://rofixalo.epizy.com/29041940982.pdfIn PDF document text
    • http://pusevim.epizy.com/chomsky_normal_form_steps.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_off0000d2d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2D3 5000 bytes
SHA-256: 697c1ad1e4a3974bfe17db03bd92107ee0ba8d0f2e1a6f187046a0ba316527c3
font_01_sfnt_off0000e3f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3F7 11592 bytes
SHA-256: 18fb8ce6cb3a2ea874e4fa633e98269e8bd48ddab6d27e17f82918b236e8d024