Malicious PDF — malware analysis report

Static analysis result for SHA-256 31d378a2fb0ec842…

MALICIOUS

PDF

74.4 KB Created: 2021-02-14 11:13:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 514bc66a0341a2bb761333e2d0be8179 SHA-1: 82b645aa6592441418872fdaf1f1b79da5be269d SHA-256: 31d378a2fb0ec842928fc12c0612a96aa7aa79b869e1633316fee75b1972ac19
136 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
  • 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://maypoin.ru/wb?keyword=android%20auto%20honda%20accord%20lx PDF link annotation
    • http://mandarins.space/73036154236478pk.pdfIn PDF document text
    • https://cdn.sqhk.co/wifukatar/fBibjaz/zurilegipidafifasepe.pdfIn PDF document text
    • http://wukosemat.22web.org/bangalore_university_b._com_syllabus_2017.pdfIn PDF document text
    • https://cdn.sqhk.co/vemetafije/icwridy/interactive_ball_launcher.pdfIn PDF document text
    • https://cdn.sqhk.co/dinewemilo/Zcl6ihj/436572373.pdfIn PDF document text
    • https://cdn.sqhk.co/baruduwege/hahijge/sewemov.pdfIn PDF document text
    • https://cdn.sqhk.co/veletafi/jg5szlf/4325372814.pdfIn PDF document text
    • https://cdn.sqhk.co/muwizavo/ii3hejf/fexuxa.pdfIn PDF document text
    • https://cdn.sqhk.co/gunonutib/hg4Ojbf/viviwumofagusupudu.pdfIn PDF document text
    • https://cdn.sqhk.co/judawube/ia4gcZ2/lyft_driver_salary_california.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/putelekireza/cleaning_services_business_cards_templates.pdfIn PDF document text
    • http://wajalapivibobi.epizy.com/other_words_for_guided.pdfIn PDF document text
    • https://s3.amazonaws.com/dazinibonofobi/matt_jewellery_design_templates.pdfIn PDF document text
    • http://retuguru.epizy.com/nonte_fonte_bangla_cartoon_mp4.pdfIn PDF document text
    • https://s3.amazonaws.com/jenisozazewubo/new_bangla_album_song_free.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_off0000e71d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE71D 4904 bytes
SHA-256: 1c30827a10db033561813cead2e05e0c7f19a19a902767c1caa1e578f262fde8
font_01_sfnt_off0000f7c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7C7 10856 bytes
SHA-256: ae46837e652a6351a617e72c56b0743bdc8f2c1f678f4912a7e474112f82a560