Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d5ad248b96f5618…

MALICIOUS

PDF

68.5 KB Created: 2021-02-20 20:51:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: c009def2f4e77f1cd19315d73d874f4e SHA-1: 54ac2015e2e5228426c011bb7970b29b30d9e7f6 SHA-256: 6d5ad248b96f5618f91ebfca545653747221c14aeff28f9be8612cf21db44f1e
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/123?utm_term=does+dunkin+have+sugar+free+vanilla In PDF document text
    • http://daimontimur.org/anvilnext_game_engine_freexfi2n.pdfIn PDF document text
    • http://shopyou.online/el_aula_diversificada_gratis8rgvf.pdfIn PDF document text
    • http://housefashion.ru/124071788185dvym.pdfIn PDF document text
    • http://feelslike35.com/head_and_neck_cancer_esmo_guidelines_2016cjj1p.pdfIn PDF document text
    • http://photoforce.ru/citizen_nighthawk_eco-drive_pilot_watch0owc6.pdfIn PDF document text
    • http://rollernefrit.xyz/best_answer_for_are_you_a_virgintb22n.pdfIn PDF document text
    • http://getsol.xyz/vopopakakugatix9d.pdfIn PDF document text
    • http://xtw2.club/does_wendys_have_50_piece_nuggets6i62w.pdfIn PDF document text
    • http://vvvvvvvvvvvvvvvvvvvvvb.xyz/math_worksheets_for_grade_1_online_freezj380.pdfIn PDF document text
    • http://moymagazin.xyz/dieux_du_stade_2019ecl4t.pdfIn PDF document text
    • http://silvanozito.online/how_do_we_measure_the_effectiveness_of_social_enterprisezds8p.pdfIn PDF document text
    • http://ayazshabutdinov.club/lagu_adlani_rambe_seberkas_sinar_wapkafy6j1.pdfIn PDF document text
    • http://nubolutlion.xyz/videos_engracados_para_status_do_whatsapp_2018lhr1q.pdfIn PDF document text
    • http://tixshopclub.fun/gafapaf6awhh.pdfIn PDF document text
    • http://civiliscmq.online/146093377216lmp6.pdfIn PDF document text
    • http://wownatural.fun/tukojofefaxetagiluleos9vb.pdfIn PDF document text
    • http://cybety.xyz/242239257440av16.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/gogonof/song_atif_aslam_tera_hua.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_off0000cdb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDB0 5292 bytes
SHA-256: fb0479f50f7cae8ad4a264b31c149894c90c186fc551db4d0674f064709c7577
font_01_sfnt_off0000dfbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFBB 10808 bytes
SHA-256: 2989a0c482faf4e1c7ea628b45ed20f1e6daaf8f0eaec44a15429a441d7e46e1