Malicious PDF — malware analysis report

Static analysis result for SHA-256 5eb1b70221d9dc16…

MALICIOUS

PDF

64.7 KB Created: 2021-02-25 15:24:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 4ea120a42a9cc571c2838beb70eb81fa SHA-1: 15227c8a8a0c84397492281bdc3af3bb2c5c301e SHA-256: 5eb1b70221d9dc166c2ba56cdbca0a8aaab25afa2958bcb52de1ff41ee47b6d9
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://seumenha.ru/wix?keyword=rhombus+worksheet+doc PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4496571/normal_5fcbecf6d18b4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454303/normal_5fe4ee7fac4e2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451047/normal_5fe87306eed52.pdfIn PDF document text
    • https://cdn.sqhk.co/xagaxubibiz/Vijjjhh/90670906330.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410204/normal_6009cd1c1c79f.pdfIn PDF document text
    • https://cdn.sqhk.co/feduvefas/VgOhbIU/best_skiff_boat_brands.pdfIn PDF document text
    • https://cdn.sqhk.co/reriwoduriju/a9gcQii/magic_rush_heroes_mod.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478968/normal_602644a27e779.pdfIn PDF document text
    • https://cdn.sqhk.co/vukixukafoga/jgRhejj/warehouse_robots_alibaba.pdfIn PDF document text
    • https://cdn.sqhk.co/gulifunanale/OhthdRY/umc_hospital_jackson_ms_address.pdfIn PDF document text
    • https://cdn.sqhk.co/gixedomawa/a6E40nj/kexaxewosiputimaxu.pdfIn PDF document text
    • https://cdn.sqhk.co/rizijuwet/7YgjJeq/tiktok_app_install_free_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372983/normal_6019bcd4ac949.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/mawesenasijoser/atul_maheshwari_form_online_kaise_kare.pdfIn PDF document text
    • https://s3.amazonaws.com/jenisozazewubo/ayushmann_khurrana_all_songs_free.pdfIn PDF document text
    • https://s3.amazonaws.com/fovezewi/black_and_decker_20v_trimmer_parts.pdfIn PDF document text
    • https://s3.amazonaws.com/tokit/jordan_canonical_form_transformation_matrix.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_off0000c398.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC398 5240 bytes
SHA-256: 5a0c85f2804e8bd7ac856ad41c65354ade211cdb7e4d7adb1efd89b077d82c26
font_01_sfnt_off0000d555.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD555 9632 bytes
SHA-256: c609cd63f71c6f62edf57052b5e8c7f60e69a47040b1337ad05f4723dbc14871