Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d40a82cb5f623c9…

MALICIOUS

PDF

71.0 KB Created: 2021-02-16 14:07:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 192338101a3265a34839cd2b82c04356 SHA-1: eb78255ffe2f68abc95773c5142e106e902148c3 SHA-256: 0d40a82cb5f623c91cae28ca6ed5f7daf3f026a9b32eb9103844d0e4eab9922d
136 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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://baarspo.ru/wb?keyword=site%20reliability%20engineer%20education%20requirements PDF link annotation
    • http://lemixebu.22web.org/gitlab_wiki_markdown_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/pevizopubok/diekWr4/driving_school_sim_2020_ovilex_ios.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368763/normal_5fd9249a66be3.pdfIn PDF document text
    • https://cdn.sqhk.co/kopilixa/gjbgF7L/uno_customizable_wild_card_rules.pdfIn PDF document text
    • https://cdn.sqhk.co/rowojazur/gijhci6/goat_simulator_all_trophies_goatville_xbox_360.pdfIn PDF document text
    • https://cdn.sqhk.co/faxinomitux/aigd3WY/nujojefuvizopapibasos.pdfIn PDF document text
    • https://cdn.sqhk.co/dukosisevu/hbLhhie/geopolymerization_of_mine_tailings.pdfIn PDF document text
    • http://kujazudoxiro.22web.org/physical_inventory_report_in_sap_abap.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/petubapizo/celine_dion_biography.pdfIn PDF document text
    • https://s3.amazonaws.com/nakuzafol/arab_health_2019_post_show_report.pdfIn PDF document text
    • https://s3.amazonaws.com/daniwodug/chopsticks_waltz_sheet_music.pdfIn PDF document text
    • http://vaxokepa.rf.gd/28219132889.pdfIn PDF document text
    • https://s3.amazonaws.com/lokijuronig/damofawubosikapepekotujul.pdfIn PDF document text
    • https://s3.amazonaws.com/resisuna/39869374468.pdfIn PDF document text
    • https://s3.amazonaws.com/pafexegud/addition_and_subtraction_worksheets_with_answer_key.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_off0000d755.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD755 5728 bytes
SHA-256: 0ff6cd79519e5c9073b831dd7d828ec8a2ec4edf48164babba9af4752025e874
font_01_sfnt_off0000eab7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAB7 10700 bytes
SHA-256: 55d77a0bd2fe7ea21e3161d67ab1f31adb3256cee1c631730700c93ae8f6d275