Malicious PDF — malware analysis report

Static analysis result for SHA-256 1230900779e66519…

MALICIOUS

PDF

74.4 KB Created: 2021-02-03 03:55:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: e54db15091cdb99efeaeb0b5ea83d469 SHA-1: 25256dd2ffbeedc0968804cd715b4212f8e9b419 SHA-256: 1230900779e6651963fe15368ab53bdc55719f1a0cd6df7dd553835242dfbd6a
184 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/wb?keyword=best%20yarra%20valley%20restaurants%20broadsheet In PDF document text
    • https://cdn.sqhk.co/sofaxuleruri/hePjeeC/69246358421.pdfIn PDF document text
    • https://cdn.sqhk.co/bidogefapo/MxjchyR/my_football_club_manager_mod_apk_unlimited_money.pdfIn PDF document text
    • http://frankkyko.com/czardas_tuba_sheet_musicqn6lj.pdfIn PDF document text
    • http://aycotoro6.xyz/nuwugenotiq9y8a.pdfIn PDF document text
    • https://cdn.sqhk.co/vulovosovem/Tgghggh/the_bowl_restaurant_naples_fl.pdfIn PDF document text
    • http://nizuvifoko.iblogger.org/asterix_legionario_italiano.pdfIn PDF document text
    • http://mebelintera.ru/fantasy_airships_steampunkcpidn.pdfIn PDF document text
    • http://ueuniti.website/jizif6u4ht.pdfIn PDF document text
    • http://pemutoguxo.66ghz.com/full_body_bodyweight_workout_program.pdfIn PDF document text
    • https://cdn.sqhk.co/bikuwizatag/Pf6jiih/75718781240.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xegunapajom.epizy.com/du_pg_admission_date_sheet_2018.pdfIn PDF document text
    • http://tamedigozetot.epizy.com/gigebotiberiwas.pdfIn PDF document text
    • https://s3.amazonaws.com/lanubili/malixanabo.pdfIn PDF document text
    • http://sefatefa.epizy.com/bsc_agri_application_form_2019_annamalai_university.pdfIn PDF document text
    • http://momugegunimex.rf.gd/62746888807.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_off0000e64b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE64B 5264 bytes
SHA-256: 0a7e21d519f01863ae3ac553a8405bb9e0ab2d016f5fa8712f9c24593d81e177
font_01_sfnt_off0000f82d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF82D 10652 bytes
SHA-256: e08253cf829942a3b30a174f096fad508af5536caac2eca7ba00a1ed91c9463a