Malicious PDF — malware analysis report

Static analysis result for SHA-256 defa3c39f421ada8…

MALICIOUS

PDF

72.5 KB Created: 2021-03-02 19:40:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 1406fc82fba7bbf1d011f58930812fbd SHA-1: e3b705c69d82982124c1511a4e4da874fbd4ac9c SHA-256: defa3c39f421ada87269d764fdf458c1dd1517a03958ed62bd479744af4c2189
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=trimble+access+general+survey+user+guide PDF link annotation
    • http://santecmb-sarl.com/sap_2000_book_free_downloadzbli4.pdfIn PDF document text
    • http://ryursew.space/how_to_print_artwork_on_fabriclqj6a.pdfIn PDF document text
    • https://guvoladedesu.weebly.com/uploads/1/3/1/4/131453897/segebosadutu.pdfIn PDF document text
    • https://nawopudupavipe.weebly.com/uploads/1/3/4/8/134856820/3325151.pdfIn PDF document text
    • http://cosmosqrab.online/ample_guitar_m_lite_ii_manualzqqkt.pdfIn PDF document text
    • http://nupewijanetari.medianewsonline.com/dinexun.pdfIn PDF document text
    • http://kudopifupelixi.22web.org/kubota_l3010_owners_manual.pdfIn PDF document text
    • http://dekiweragaf.mywebcommunity.org/create_userform_in_word_vba.pdfIn PDF document text
    • http://hellesypakk.online/14023873875hhzuz.pdfIn PDF document text
    • http://xuxetosufuzo.getenjoyment.net/wivupilu.pdfIn PDF document text
    • http://vodabutopidaru.getenjoyment.net/zizarusuzojos.pdfIn PDF document text
    • http://tonedomopoja.scienceontheweb.net/jadegoxivatu.pdfIn PDF document text
    • https://suzoniku.weebly.com/uploads/1/3/4/4/134456843/8929556.pdfIn PDF document text
    • https://xafusotegemuwif.weebly.com/uploads/1/3/5/3/135304795/4cc63fe.pdfIn PDF document text
    • http://gekodejevotug.medianewsonline.com/89562300922.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/kujapomib/renenifoloz.pdfIn PDF document text
    • http://gurabagoderes.atwebpages.com/is_vedic_astrology_more_accurate_reddit.pdfIn PDF document text
    • http://nijesetu.epizy.com/comentarios_del_libro_de_urantia.pdfIn PDF document text
    • https://s3.amazonaws.com/tedowafomaru/satinek.pdfIn PDF document text
    • http://fojosotum.myartsonline.com/linksys_velop_bridge_mode_performance.pdfIn PDF document text
    • https://s3.amazonaws.com/xidulumexi/amazing_grace_chris_tomlin_sheet_music.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_off0000de09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE09 5508 bytes
SHA-256: 5da5fa7f77740718c8a918f99ae5cf2de2d8fc97bfff28a4433ed31bb83780b2
font_01_sfnt_off0000f0b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0B0 10412 bytes
SHA-256: fa741e2ff83f137645cc33332d1c023e820314571bc7cc3b86d6f08b6eaf6b37