Malicious PDF — malware analysis report

Static analysis result for SHA-256 f66026238abd6a14…

MALICIOUS

PDF

74.5 KB Created: 2021-02-28 11:19:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 0a69605911e778eee88488c5453a61fc SHA-1: 9a88cbfd2743efe7b4649704df7235dd83afcf2e SHA-256: f66026238abd6a146a0c6998e65d9bedf5a1773849a107836d7c625eb512b850
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://xajibur.ru/award?keyword=how+to+get+abs+and+chest+at+home PDF link annotation
    • https://cdn.sqhk.co/nagebagem/hjbJicj/5693575198.pdfIn PDF document text
    • https://cdn.sqhk.co/vasegodesazu/jgjaUgf/87116386174.pdfIn PDF document text
    • https://cdn.sqhk.co/modajili/5gciaN5/5399605697.pdfIn PDF document text
    • https://cdn.sqhk.co/tamaladafa/myYvWge/acg_number_coloring_pages.pdfIn PDF document text
    • https://cdn.sqhk.co/diduwuposenu/gjjX7ib/prestonplayz_net_worth.pdfIn PDF document text
    • https://cdn.sqhk.co/dejuxafe/igegdic/solitaire_card_games_for_suits_247.pdfIn PDF document text
    • https://cdn.sqhk.co/nufesewepi/frgc5cm/34528372220.pdfIn PDF document text
    • https://cdn.sqhk.co/panafilaputu/jb5jfhg/jotitaxawedaj.pdfIn PDF document text
    • https://cdn.sqhk.co/tulotunofuz/ieuhejf/votamuwesajugoloro.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464851/normal_5fe7053850df1.pdfIn PDF document text
    • https://cdn.sqhk.co/nosamese/hb0mGia/rojixuniworutibegokali.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407100/normal_5ff8511c449ef.pdfIn PDF document text
    • https://cdn.sqhk.co/tanusulirava/e5qihjg/3499206363.pdfIn PDF document text
    • https://cdn.sqhk.co/folamudoj/ahahiii/webtoon_promo_codes_2020_july.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422161/normal_5fd6484d58966.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e7e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7E8 5416 bytes
SHA-256: 9b27afcc2dfcaeff986b2cc7125ac77d26ec475a1a4b4c55cf4c5f79dce2b334
font_01_sfnt_off0000fa40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA40 10280 bytes
SHA-256: 697247c200fee1f8b0d36cf9befcca0437bd843b8aa10c5fc1ffaddb9bf962f8