Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bfc225d5cc7e197…

MALICIOUS

PDF

63.9 KB Created: 2021-02-27 21:47:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 35ed39bf3173f03ad972f231d99412e1 SHA-1: d64680c5fc1e05631a4d70aa5826b4c6206378c9 SHA-256: 3bfc225d5cc7e197de6bff7826c910253e0f26987f66716da37e245b363af3c7
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/award?keyword=latest+covid+19+news+texas PDF link annotation
    • https://cdn.sqhk.co/waximanodif/HlQiehd/rumble_stars_football_mod_apk_download.pdfIn PDF document text
    • http://vir-tus.com/detroit_red_wings_charter_planeu2mxf.pdfIn PDF document text
    • http://itagreen.fun/zuwesabuovk96.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426059/normal_602422c783bc7.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/wozowuledij/ninoxar.pdfIn PDF document text
    • https://s3.amazonaws.com/bopuxosavubare/cloud_png_background_hd.pdfIn PDF document text
    • https://s3.amazonaws.com/wazorixekunafob/defunolamud.pdfIn PDF document text
    • https://s3.amazonaws.com/woxotopapozokev/bomefikosexijixapidij.pdfIn PDF document text
    • https://s3.amazonaws.com/wulotugadag/help_a_reporter_out_login.pdfIn PDF document text
    • https://s3.amazonaws.com/luworizesupox/bmus_guidelines_ultrasound_safety.pdfIn PDF document text
    • https://s3.amazonaws.com/vuraradaso/84757866230.pdfIn PDF document text
    • https://s3.amazonaws.com/gazijewevan/financial_forecasting_excel_templates.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_off0000bfa8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFA8 5172 bytes
SHA-256: 2ac4a4e85df8d771db64d32af6c1545fa055bdd400e54ef2dfef2ec6299b8e0e
font_01_sfnt_off0000d175.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD175 9932 bytes
SHA-256: 8b2bf960a8fcaddf5104fbc82b2109c635ed54de8df363b114d66db8f6372bc4

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