Malicious PDF — malware analysis report

Static analysis result for SHA-256 4019bc79db318dd7…

MALICIOUS

PDF

71.2 KB Created: 2021-01-27 14:17:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 7e26ed1f9f9a34c6300c6692e1ea31eb SHA-1: db5e61c5968c9dfaf9cf79062c0450a3006b816b SHA-256: 4019bc79db318dd75e0a4a5e6e8204830965f43bc66edf9c9bc6eb0af33afea3
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/wb?keyword=the%20unbeatable%20tic%20tac%20toe%20games In PDF document text
    • http://mabirimelu.iblogger.org/licence_form_fill.pdfIn PDF document text
    • http://majelogajizivo.iblogger.org/lavesu.pdfIn PDF document text
    • http://fenofaxizuva.22web.org/template_daftar_riwayat_hidup.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rogofijanititad.epizy.com/infinitive_worksheets_with_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/miledu/honeywell_alarm_system_manual_l3000.pdfIn PDF document text
    • https://s3.amazonaws.com/zubata/real_football_2012_game_for_mobile.pdfIn PDF document text
    • https://s3.amazonaws.com/wunupalezozerud/kit_borussia_dortmund_dls_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/bupaxomu/67417105507.pdfIn PDF document text
    • https://s3.amazonaws.com/lumixi/dragon_age_awakening_gift_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/lomogas/profitability_index_calculator_excel_template.pdfIn PDF document text
    • https://s3.amazonaws.com/firudegix/39960361931.pdfIn PDF document text
    • http://bidavotajowev.epizy.com/papilas_fungiformes_localizacion.pdfIn PDF document text
    • https://s3.amazonaws.com/dudigonifu/43022309251.pdfIn PDF document text
    • https://s3.amazonaws.com/lekizopiloref/balkar_ankhila_kut_khaenga_drivera_song.pdfIn PDF document text
    • http://dujazenemelix.epizy.com/family_members_worksheet_first_grade.pdfIn PDF document text
    • https://s3.amazonaws.com/lebaxa/thinking_fast_and_slow_book_review.pdfIn PDF document text
    • https://s3.amazonaws.com/pesetufavo/cg_movie_site_list.pdfIn PDF document text
    • https://s3.amazonaws.com/zedudo/bose_home_speaker_300_user_manual.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_off0000d918.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD918 5208 bytes
SHA-256: 0c7df166ce8909cd84c89cb3826b34c89ac919735c1c50865416537ca568ebc3
font_01_sfnt_off0000eaa7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAA7 10728 bytes
SHA-256: 77927d36fbbfb9a45138e69ec67623d1cf8e4c503ced723187dc5eaf8645eb60