Malicious PDF — malware analysis report

Static analysis result for SHA-256 a671adde5dcd7ebc…

MALICIOUS

PDF

71.6 KB Created: 2021-03-02 15:55:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: e12207e15f0ebf7b7e06c0c25144f0b7 SHA-1: dfeb1978a66d0c51b76b4e721d47dd2cd7296f62 SHA-256: a671adde5dcd7ebc5a890818d07236211cda98c222c8aff2169c59f61fae85af
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://gimoguvi.ru/award?keyword=numerical+linear+algebra+textbook+pdf PDF link annotation
    • https://cdn.sqhk.co/wavefekus/jlNiggd/werewolf_movies_2000s.pdfIn PDF document text
    • https://cdn.sqhk.co/niramojiga/jijiiar/moviestarplanet_2_login_online.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386829/normal_5fd68dfcc9753.pdfIn PDF document text
    • http://sportita.fun/70463143613mjys6.pdfIn PDF document text
    • https://cdn.sqhk.co/wifopuzuxiba/j3Rfiih/nitugofabamenevawep.pdfIn PDF document text
    • http://shoop-fl.ru/windows_10_classic_desktopw2lp1.pdfIn PDF document text
    • https://cdn.sqhk.co/gixotagokezu/cUXrlAy/agent_combat_3d_model.pdfIn PDF document text
    • http://nonretloli.site/acrobat_pro_dc_subscriptionf4lex.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446789/normal_5ff990fb88fc3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451365/normal_60287706c6da5.pdfIn PDF document text
    • http://reduslim-shop.website/problems_with_black_and_decker_coffee_makerd2xjf.pdfIn PDF document text
    • https://cdn.sqhk.co/fulaxanew/nhaihlo/brand_management_colleges_in_canada.pdfIn PDF document text
    • https://cdn.sqhk.co/vobipibomuk/gcjghjd/marble_run_game_app.pdfIn PDF document text
    • http://gnoogle.site/best_online_chess_tactics_trainingso934.pdfIn PDF document text
    • https://cdn.sqhk.co/resilano/bVciSSL/redmi_airdots_pc_driver.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390383/normal_60116f5417311.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/memobofilenabon/pokuvazawawifafozudo.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaduxa/dovetixedavaxavew.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_off0000d976.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD976 5540 bytes
SHA-256: 1190575c73720c833880bfe6ded8aae0712006dfab5605d2dfcb45949a1e256f
font_01_sfnt_off0000ec3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC3D 10804 bytes
SHA-256: 55c86cbbbbe83d1065f432bedb1391d3b19ecf2107945653b9b1553c987cbf34