Malicious PDF — malware analysis report

Static analysis result for SHA-256 444ca229fce8e0de…

MALICIOUS

PDF

62.2 KB Created: 2021-02-19 05:32:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: a3d37e6f910c2f2da6a6a77f25660df7 SHA-1: cab5078f0b6143b244a3ea135d39deccf5fbab68 SHA-256: 444ca229fce8e0de544403e34ca7fc401f2e8ec9e1c06efd96a970af2a48c75f
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://maypoin.ru/wix?keyword=dolphin+mini+browser+apk+old+version PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4408483/normal_5fe0895133e15.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485436/normal_602d0f8841a2e.pdfIn PDF document text
    • https://cdn.sqhk.co/zitedefew/gfgggeN/45409880558.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410679/normal_601cfe82d18a5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453115/normal_6017bf9a742a7.pdfIn PDF document text
    • https://cdn.sqhk.co/xunijejozi/haicNls/9186357456.pdfIn PDF document text
    • http://judezibadixisom.22web.org/jodilanupojopuxezatis.pdfIn PDF document text
    • https://cdn.sqhk.co/pixafosabow/jqLgegd/gejudokoguliwozuw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gevitejivojo.rf.gd/likasakowuvegulu.pdfIn PDF document text
    • http://wixuwozovezo.rf.gd/dance_monkey_mp4.pdfIn PDF document text
    • https://s3.amazonaws.com/fajetufekejo/vcds_18._9_ro.pdfIn PDF document text
    • http://wiwokijage.rf.gd/96049157309.pdfIn PDF document text
    • http://tuvatopuvonu.epizy.com/cateter_venoso_periferico_cuidados_de_enfermeria.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_off0000b6ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB6EA 5556 bytes
SHA-256: 45f5db467088da9a3a32cf69dd909dbf7ef2e5fcce1d6efc88608aa4c1eeae43
font_01_sfnt_off0000c9ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9AE 10116 bytes
SHA-256: 6bef0d0c5447b8f4fd182f6de1f910def8d20c70c67b2fceeb3ec8a0ab4dffd5