Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e3dc04f2aebdb38…

MALICIOUS

PDF

68.6 KB Created: 2021-02-28 19:15:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: ccd5713e4c3f5507b8ebe68dccb8a59b SHA-1: 39dd791d5f71d41aa95e3c346fb705d321efad3c SHA-256: 6e3dc04f2aebdb381e54c27bb310628bd0485aac27ade1dbc5bc220b30ff4d67
196 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://vilenefex.ru/award?keyword=baby+groot+live+wallpaper+android PDF link annotation
    • https://marikiwow.weebly.com/uploads/1/3/1/3/131379510/juzuborimu-garimaxem.pdfIn PDF document text
    • https://wawupibinotab.weebly.com/uploads/1/3/4/9/134900246/bofarev_wonape.pdfIn PDF document text
    • https://cdn.sqhk.co/tiwasusul/hdUhdft/weed_factory_idle_apk_mod.pdfIn PDF document text
    • https://cdn.sqhk.co/selugijibix/JOgghh7/podcast_player_app_iphone.pdfIn PDF document text
    • https://cdn.sqhk.co/jotenitix/hgfK4hf/tixalugidi.pdfIn PDF document text
    • https://cdn.sqhk.co/retesixabe/h7nPifP/mashup_songs_website.pdfIn PDF document text
    • https://cdn.sqhk.co/tezizejaropu/dwuNAAP/tikurotuluvetun.pdfIn PDF document text
    • https://cdn.sqhk.co/surofowudula/jgLy0hb/nagifuvaxafemani.pdfIn PDF document text
    • https://cdn.sqhk.co/zofizitene/jigYXzw/zeguxofep.pdfIn PDF document text
    • http://dazenad.iblogger.org/farandole_trombone_sheet_music.pdfIn PDF document text
    • https://cdn.sqhk.co/vazoguzo/ChcB4gf/draw_out_game_rules.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/fatikonavori/basketball_agility_workout.pdfIn PDF document text
    • https://s3.amazonaws.com/vudivuzakal/birthday_invitation_design_templates_free.pdfIn PDF document text
    • https://s3.amazonaws.com/sajatofubote/54029271696.pdfIn PDF document text
    • https://s3.amazonaws.com/dojonuta/gekaf.pdfIn PDF document text
    • https://s3.amazonaws.com/xidazeze/amelie_poulain_piano_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/lososimap/california_boater_exam_answers_key.pdfIn PDF document text
    • https://s3.amazonaws.com/suzixegazunow/mailchimp_template_column_width.pdfIn PDF document text
    • https://s3.amazonaws.com/dojivewobasuval/34672406186.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c361.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC361 5180 bytes
SHA-256: 95b93f8b9b3e51844628582bc8371a630e9280b7c59ddbd7817205225bb0f235
font_01_sfnt_off0000d51f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD51F 9892 bytes
SHA-256: f16a6e46c0d87331f9811e97be2443bb6d8f283e222ee1850cb5b22d1c0e07cd
font_02_sfnt_off0000f719.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF719 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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