Malicious PDF — malware analysis report

Static analysis result for SHA-256 bcf489f2941ee5d6…

MALICIOUS

PDF

68.9 KB Created: 2021-03-03 07:50:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 639837ca8a38dfaf05c547b1cce1d539 SHA-1: 6f9b2d8496e5bf97889c9b6a6f3a305aaf537827 SHA-256: bcf489f2941ee5d6338910d5faee6350a9acb726b2eaba8568d47bc51724b8e9
194 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/wix?keyword=fisher+and+paykel+dishwasher+manual+dd60dcx6 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4490736/normal_602a4d7fac737.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445889/normal_5fef09f37f93c.pdfIn PDF document text
    • https://cdn.sqhk.co/wutalididow/YgiuYLf/xilopadobuvova.pdfIn PDF document text
    • https://cdn.sqhk.co/fegadosijete/jhxgfC8/tiktok_starbucks_drink_sweet_cream_white_mocha.pdfIn PDF document text
    • http://zeweduzu.iblogger.org/26066818709.pdfIn PDF document text
    • https://cdn.sqhk.co/xuteposidobi/fo7vjdI/ted_talks_2020_education.pdfIn PDF document text
    • https://cdn.sqhk.co/fusuwudofal/51jigjZ/posanab.pdfIn PDF document text
    • https://cdn.sqhk.co/legusovej/igvMsPq/vewupekuzosawupowe.pdfIn PDF document text
    • https://cdn.sqhk.co/sogupavetut/jcijjjb/build_battle_minecraft_map.pdfIn PDF document text
    • https://cdn.sqhk.co/wadelovelo/RFgehdI/celebrity_cruise_line_stockholder_benefit.pdfIn PDF document text
    • https://cdn.sqhk.co/dusaradezat/yighaWu/84887841411.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494648/normal_600167620642d.pdfIn PDF document text
    • https://cdn.sqhk.co/rifarako/idphejg/piano_lessons_near_me_for_4_year_olds.pdfIn PDF document text
    • https://cdn.sqhk.co/vilitemeru/hijjDyf/new_punjabi_sad_song_ringtone_download_mp3_2018.pdfIn PDF document text
    • https://cdn.sqhk.co/nokotadi/gtje3cR/zing_zang_bloody_mary_mix_nutrition.pdfIn PDF document text
    • http://xekepova.iblogger.org/84431006449.pdfIn PDF document text
    • https://cdn.sqhk.co/datawafag/ifidEie/lojogame.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://banugigo.epizy.com/dymo_letratag_100h_plus_handheld_label_maker_for_office_or_home.pdfIn PDF document text
    • http://tuzotulerijenej.rf.gd/fisioterapia_na_hernia_de_disco_lombar.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_off0000cf67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF67 5888 bytes
SHA-256: 5555cc47dbc442af07eb5de3138d5200100306c7fa642a9d3a7351a19e66dfce
font_01_sfnt_off0000e36c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE36C 10200 bytes
SHA-256: 3b857c108111262cebc2319c1023f568bbe9bc2ad0869a089716f8d83de7ed70

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