Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1a5b5b260eb01e6…

MALICIOUS

PDF

73.2 KB Created: 2021-02-27 04:04:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 24c21531a0f5820ecf5688585f655c3f SHA-1: bc5f440436d532276f7cda40565ceb29cbb3e1a9 SHA-256: b1a5b5b260eb01e63395ba8529fe30782af3faf702ad66af452b1710c904a3a1
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://jumiwimov.ru/award?keyword=mick+foley+have+a+nice+day+audiobook PDF link annotation
    • https://cdn.sqhk.co/levuzivanu/h3zigZq/49079989880.pdfIn PDF document text
    • http://avlto.best/18485038950sjdmk.pdfIn PDF document text
    • https://cdn.sqhk.co/bogovureg/WicMjdQ/33351400852.pdfIn PDF document text
    • https://cdn.sqhk.co/badaxiloru/jejhijh/vujukawomujazep.pdfIn PDF document text
    • http://fujuvujazapoko.22web.org/87146496068.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484632/normal_5ff2c310116a4.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/xilasisefi/inter_1st_year_physics_book.pdfIn PDF document text
    • https://s3.amazonaws.com/sugowubuf/definicion_de_punto_en_artes_plasticas.pdfIn PDF document text
    • http://mixomexazuvoxod.rf.gd/dusejotovivuw.pdfIn PDF document text
    • http://subipugexenijok.rf.gd/54643720047.pdfIn PDF document text
    • https://s3.amazonaws.com/jirebonudur/ejemplo_de_anteproyecto_de_residencia_profesional.pdfIn PDF document text
    • https://s3.amazonaws.com/tokatefozude/collocations_with_go_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/suxiweke/wusivupikolilidaverasiz.pdfIn PDF document text
    • https://s3.amazonaws.com/wavunot/chintpurni_mata_aarti.pdfIn PDF document text
    • https://s3.amazonaws.com/vebenok/football_defensive_stat_sheet_printable.pdfIn PDF document text
    • https://s3.amazonaws.com/kozewuposoridil/jesogivoradokejovavi.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_off0000d7d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7D5 5208 bytes
SHA-256: b806e9cf82f7ebe571dd5e98e06dbc23fbcb79ddd72c460c8931c21c41fd4ad3
font_01_sfnt_off0000e9ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9AD 14624 bytes
SHA-256: c2e82ba8345af8a68bcd7c87a67a9ede80c7ef641cb66a4395bef753b7157985

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