Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e3c3bd6dc19bf40…

MALICIOUS

PDF

63.8 KB Created: 2021-03-10 04:02:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: fd0a5fe9c17e6f848571a8e759ced4be SHA-1: e9d7fbc92630bc657a797108947861b9f05b22bf SHA-256: 4e3c3bd6dc19bf408213581c77cbc6c1b41ffe7d3b8cdcf173f22b6aefbd1f37
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous external links, many pointing to disposable domains, suggesting a link farm or phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of techniques used to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9618

Heuristics 4

  • 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
  • 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://gimoguvi.ru/award?keyword=ayreon+the+source+booklet+pdf PDF link annotation
    • http://lnstagram-office.com/36311553849bc8cc.pdfIn PDF document text
    • http://bigowet.xyz/pujiwumoborukimac1wjl.pdfIn PDF document text
    • http://igbusinessabouthelp.com/coffee_shop_equipment_3d_modelof46l.pdfIn PDF document text
    • http://instasale.company/gesatopimudumobvh61f.pdfIn PDF document text
    • http://20970907.net/how_do_you_do_a_hard_return_in_indesignjjcwq.pdfIn PDF document text
    • http://fefogumok.22web.org/lusokawugi.pdfIn PDF document text
    • http://azorocheat6.xyz/clearstream_2v_vs_2maxzv7lv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418379/normal_602ec0c2d7689.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379229/normal_5fdea38abd36c.pdfIn PDF document text
    • http://legrand-spb.ru/bhigi_bhigi_sadko_pe_female_ringtone_downloadcs1wn.pdfIn PDF document text
    • http://magic-spring.com/longman_english_grammar_practice_for_advanced_students_free_downloadz78ln.pdfIn PDF document text
    • http://kittyplay.online/movie_maker_2012_free_download_windows_100ha8x.pdfIn PDF document text
    • http://pubifirona.22web.org/rasevogemotazukesul.pdfIn PDF document text
    • http://axecheat9.xyz/165261287821hku3.pdfIn PDF document text
    • http://fresh-ita.space/11381872101zhysg.pdfIn PDF document text
    • http://vvinorama.website/canon_eos_digital_rebel_ds6041_specs0uck1.pdfIn PDF document text
    • http://figofubinodafe.rf.gd/1490973829.pdfIn PDF document text
    • http://risitikavaj.rf.gd/service_company_balance_sheet_example.pdfIn PDF document text
    • http://xipijokezi.rf.gd/18261112497.pdfIn PDF document text

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