Malicious PDF — malware analysis report

Static analysis result for SHA-256 42c64a76532e6610…

MALICIOUS

PDF

66.9 KB Created: 2021-03-04 09:03:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: fc4d2145a0835a050b0154504fd1bb1c SHA-1: 4fa4b2801bc74ff84ca282bf433c0bcaa496a858 SHA-256: 42c64a76532e6610be200ef7aaa22d0795944645d2483433b5f538e7d12f3b2b
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • 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://gimoguvi.ru/award?keyword=plural+form+of+nouns+worksheets+for+grade+3+pdf PDF link annotation
    • https://josozigigararu.weebly.com/uploads/1/3/2/6/132681886/3634548.pdfIn PDF document text
    • https://cdn.sqhk.co/fakineduxafe/ehbcgiy/3136649.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403537/normal_6022534e526e0.pdfIn PDF document text
    • https://xuxerativizujaf.weebly.com/uploads/1/3/1/0/131070719/ac36f4861a61faa.pdfIn PDF document text
    • http://goodnatural.space/al_manhal_dictionaryiru7f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448100/normal_603fd1f042c49.pdfIn PDF document text
    • http://registrat.space/nimugoke4id.pdfIn PDF document text
    • http://zhk-samolet-krasnodar.info/42772769719ggods.pdfIn PDF document text
    • https://cdn.sqhk.co/nazujovo/gfxggje/xuvezivisisu.pdfIn PDF document text
    • http://mon-cmso.best/46302363452z6czp.pdfIn PDF document text
    • https://cdn.sqhk.co/nugizape/a5XLigI/tobizela.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495531/normal_5fe45a38c94f9.pdfIn PDF document text
    • http://romeoplanet.club/electronic_component_cross_referencekh0i1.pdfIn PDF document text
    • https://cdn.sqhk.co/lovojekaboxi/AXhchfl/live_wallpaper_samsung_galaxy_watch.pdfIn PDF document text
    • https://selokifasafu.weebly.com/uploads/1/3/4/3/134383977/804716dacb6ca9.pdfIn PDF document text
    • http://voiprormul.xyz/absorbancia_a_transmitancia_formulaa6jza.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393026/normal_60068f0e77a35.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/zatazewoz/openvpn_certificate_verify_failed_android.pdfIn PDF document text
    • https://s3.amazonaws.com/jafujasiwetid/jojatilikevoligagabud.pdfIn PDF document text
    • https://s3.amazonaws.com/rexogeguxosix/escuchar_musica_gratis_app_android.pdfIn PDF document text
    • https://s3.amazonaws.com/bofake/mipawokupivilufefogexe.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_off0000c753.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC753 5776 bytes
SHA-256: 51b43be2b7d3bd1e62b67954f08e3680252a8eec4d8c66d6a17c24283ec514a4
font_01_sfnt_off0000daeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAEB 9740 bytes
SHA-256: 5054ffe846dd9a367b9a7e2db106ad5a251de00528c837723ed143eb3ab633c5

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