Malicious PDF — malware analysis report

Static analysis result for SHA-256 b534a950b97bbbe8…

MALICIOUS

PDF

70.8 KB Created: 2021-03-04 18:39:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 81c57e2f1db2ddac7738a6bc70ad765e SHA-1: 0c5d58ad2c190d96256bd92f964fa9d750d31abc SHA-256: b534a950b97bbbe87b000d68de86cdcbfde3eab7ae1638f2bd424c5672fd72e3
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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
  • 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://maypoin.ru/award?keyword=carel+pco+terminal+password PDF link annotation
    • https://cdn.sqhk.co/domuzusud/biigdie/13742790231.pdfIn PDF document text
    • https://nimadelafux.weebly.com/uploads/1/3/2/6/132695392/7dc10a.pdfIn PDF document text
    • https://cdn.sqhk.co/neviragar/lEjdkja/watch_crossword_mysteries_episode_2.pdfIn PDF document text
    • https://zamosokajuzosa.weebly.com/uploads/1/3/4/6/134651904/5cd8fad8.pdfIn PDF document text
    • http://vatologox.iblogger.org/vogojagefaju.pdfIn PDF document text
    • http://scandisvet.ru/how_to_fix_camera_resolution_on_macbook_airbozjm.pdfIn PDF document text
    • http://hookup158.fun/85843017109yoyoa.pdfIn PDF document text
    • http://milanomoda.site/2303891437059hly.pdfIn PDF document text
    • http://xeropokawat.22web.org/morami.pdfIn PDF document text
    • https://cdn.sqhk.co/boguzivipel/e0o8jZ3/1663399392.pdfIn PDF document text
    • https://gakurajoduradi.weebly.com/uploads/1/3/4/1/134131237/posatiluvidaruv-rewexa-dusevadojuvud.pdfIn PDF document text
    • https://xamaboku.weebly.com/uploads/1/3/4/6/134606559/busuzomiruk.pdfIn PDF document text
    • http://safagiko.iblogger.org/secondary_school_report_writing_format.pdfIn PDF document text
    • http://zuduwamani.mypressonline.com/whirlpool_top_load_agitator_washer_reviews.pdfIn PDF document text
    • http://zonerokemub.getenjoyment.net/gateway_dx4860_ram_upgrade.pdfIn PDF document text
    • https://cdn.sqhk.co/ravunovibuxi/jdfginl/maxukefor.pdfIn PDF document text
    • https://gofupadosu.weebly.com/uploads/1/3/4/8/134853885/22d249fb8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wivovazu.epizy.com/harry_potter_hogwarts_mystery_merula_duel_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/muvevanepen/dark_dimension_guide_marvel_strike_force.pdfIn PDF document text
    • https://s3.amazonaws.com/zarevizebi/akuntansi_sebagai_sistem_informasi_menurut_para_ahli.pdfIn PDF document text
    • https://s3.amazonaws.com/rutufokedizon/61634130945.pdfIn PDF document text
    • https://s3.amazonaws.com/jukoxisojow/data_warehousing_and_data_mining_textbook.pdfIn PDF document text
    • https://s3.amazonaws.com/tevigotu/gomozakelagufelu.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_off0000d83d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD83D 5216 bytes
SHA-256: f510ba29cc840b2c80cd7457573d955e5078a25c8a9aa166c141fd7953dbf290
font_01_sfnt_off0000e9ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9ED 10460 bytes
SHA-256: 0ff9cb8b9de8c492d2ea9aeb9b441c33210a62949d47a10ede0370457115f28a

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