Malicious PDF — malware analysis report

Static analysis result for SHA-256 72fadd9ecda51326…

MALICIOUS

PDF

68.9 KB Created: 2021-02-07 10:32:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: a5b4150c77b5cd5ab26d12ae153e03a2 SHA-1: fb85b578b49496b1207904dd6916a46ecb64ad45 SHA-256: 72fadd9ecda51326409111fef8a7542ac7b37d3e79ff4185e1f335467c8c2d7f
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://seumenha.ru/aws?utm_term=acute+diverticulitis+management+guidelines PDF link annotation
    • https://cdn.sqhk.co/powirafawume/fbibehc/general_knowledge_quiz_questions_and_answers_at_end.pdfIn PDF document text
    • https://cdn.sqhk.co/bapulofuw/jp5iLje/37521185429.pdfIn PDF document text
    • https://cdn.sqhk.co/vivepovugeli/aDijrhg/91947856506.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4401555/normal_5ff46a5a49c76.pdfIn PDF document text
    • https://cdn.sqhk.co/verexumifo/nBAgchf/zevufolusakaf.pdfIn PDF document text
    • https://cdn.sqhk.co/tajudozizif/ehjfgmh/best_nba_3pt_shooters_2019.pdfIn PDF document text
    • http://dorightpress.com/3342038246f9wlf.pdfIn PDF document text
    • https://cdn.sqhk.co/wepigosogo/iNMVDgf/10_off_coupon_for_walmart_pickup.pdfIn PDF document text
    • https://cdn.sqhk.co/vivepovugeli/jkIZhaQ/chase_mobile_deposit_max.pdfIn PDF document text
    • http://merishwheelrecords.com/nitusixemeruwwwws.pdfIn PDF document text
    • http://zoomita.space/57888348246fkr58.pdfIn PDF document text
    • https://cdn.sqhk.co/doxurozupu/gcNgejW/46155296012.pdfIn PDF document text
    • https://cdn.sqhk.co/kifavubivelo/aD6sjau/wordscapes_level_82.pdfIn PDF document text
    • https://cdn.sqhk.co/ludozenidi/hf5y6Lg/bike_games_free_download_for_pc_softonic.pdfIn PDF document text
    • https://cdn.sqhk.co/suxevevagova/CMhh3if/colour_block_denim_jacket_womens.pdfIn PDF document text
    • http://clubstore.info/picsart_photo_studio_apk_for_androidd2loz.pdfIn PDF document text
    • http://cesaregaspari.com/academic_reference_letter_template_wordkxxsn.pdfIn PDF document text
    • http://abanca-electronica.com/67742572483xuewb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000d1b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1B1 5308 bytes
SHA-256: a348e8f4de332a654df0abdc57323f3a42d49c264ec033673d52b43f3b186964
font_01_sfnt_off0000e3b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3B0 10428 bytes
SHA-256: fdf273b1d76d0394f5f6cbd3886e36342d6b4c6e67f26b69680bd54360e3ee53