Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba5fe4361bb23f2c…

MALICIOUS

PDF

84.5 KB Created: 2021-02-16 12:25:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: f2043d64d954efef2e1055cea754db37 SHA-1: 1ecd4d9201a12871db6432e6e2647769108f5c9b SHA-256: ba5fe4361bb23f2c16bbee8788aba11e81ff07c69a6663945b3a252644792d75
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/123?utm_term=which+one+of+the+following+is+the+format+of+a+cvp+income+statement PDF link annotation
    • https://cdn.sqhk.co/wevavagu/jjd99I8/vintage_arcade_games_for_sale_near_me.pdfIn PDF document text
    • https://cdn.sqhk.co/nobutowug/eSwghgi/nhl_21_be_a_pro_goalie.pdfIn PDF document text
    • https://cdn.sqhk.co/ragekasa/hCggyib/chase_mobile_digital_wallet.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392661/normal_601788b543eac.pdfIn PDF document text
    • https://cdn.sqhk.co/fipimomozuk/vhbo8sO/40172846867.pdfIn PDF document text
    • https://cdn.sqhk.co/tajalawad/ghZmXJZ/bucket_list_movie_clips.pdfIn PDF document text
    • https://cdn.sqhk.co/pugudanirav/hePkeqm/witivak.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373520/normal_5fe330d80f22f.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/sivanira/girujiferinesa.pdfIn PDF document text
    • https://s3.amazonaws.com/fipijife/13619544333.pdfIn PDF document text
    • https://s3.amazonaws.com/xowasosuf/3752071703.pdfIn PDF document text
    • https://s3.amazonaws.com/kefefetafij/sonuvodikivokifaximuwuben.pdfIn PDF document text
    • https://s3.amazonaws.com/belopudevuzuza/keeping_faith_imdb_parents_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/pogolo/1968_holden_monaro_gts_hk_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/zufaxepixiguxax/anestesia_local_en_odontologia_pearrocha.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_off00010991.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10991 5596 bytes
SHA-256: 94117ab3b241bb7f4291f9fede2745457a75ce58ed5a76c6842d2f763c8c1eae
font_01_sfnt_off00011c99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C99 11848 bytes
SHA-256: e1f67124de09e48d2925378277c5ae376d9e8b583515f6a88c67d7ac6ee7c87d