Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7471f208f43272f…

MALICIOUS

PDF

66.5 KB Created: 2021-02-25 18:09:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: f99dc8a3ab9b3f1b3bb675562cac020d SHA-1: e70ba31d40a503cae4436d67cbfe6b1326dc28ff SHA-256: c7471f208f43272f6f98e71df81f20b9c65377505e3f0ef8131935263acda0b9
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://leonvi.ru/award?keyword=how+to+replace+belt+on+frigidaire+stackable+dryer PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4451033/normal_602b44e6a5bce.pdfIn PDF document text
    • http://jaralet.getenjoyment.net/onan_7500_quiet_diesel_generator_for_sale.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415530/normal_6017997a6c321.pdfIn PDF document text
    • https://cdn.sqhk.co/butituguxur/b7ljagc/zimulirudurililesig.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413846/normal_5ffc2cb846682.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4394072/normal_5fe0014bd2146.pdfIn PDF document text
    • http://zememor.sportsontheweb.net/a_divina_comdia_resumo.pdfIn PDF document text
    • http://blognews.top/verizon_fios_remote_code_for_onn_tvbjevj.pdfIn PDF document text
    • https://cdn.sqhk.co/mujowofapubi/D5lidhj/zokokogil.pdfIn PDF document text
    • https://cdn.sqhk.co/wufevinek/F13fhiz/zombie_hunter_king_hackeado.pdfIn PDF document text
    • http://fefiwizam.sportsontheweb.net/molebexaruwizofese.pdfIn PDF document text
    • https://cdn.sqhk.co/xumesapaxoku/AibjafO/zerivumomufajo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424007/normal_602785b3567c5.pdfIn PDF document text
    • https://cdn.sqhk.co/lilapanorup/jifx5bY/sea_creatures_coloring_pages_printables.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_off0000c81c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC81C 5680 bytes
SHA-256: 7613bda67c6562a78f4bab52e2fa947fc568c908cf49928b2d624d3e82564a1e
font_01_sfnt_off0000db8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB8E 9736 bytes
SHA-256: 4ccaa1d280d643ffaaba7c2cdd5bfa4c0d08ac1d21bfdf0d48298a16e54a3354