Malicious PDF — malware analysis report

Static analysis result for SHA-256 d735c903513d60bf…

MALICIOUS

PDF

68.2 KB Created: 2021-02-26 23:25:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 4b20a92aba9078caefe973d72332f13d SHA-1: 7d43bd07bb68921c886cfd1f7d6c7ee5fef23f91 SHA-256: d735c903513d60bfce7ef1930b6da444b7eaa6cdd0f1593cdd50018811be3442
184 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/award?keyword=mossberg+930+spx+magpul+stock In PDF document text
    • http://ketaton.mywebcommunity.org/how_to_install_samsung_printer_xpress_m2021.pdfIn PDF document text
    • http://lupelisizi.medianewsonline.com/rufubunegazuwemunesasax.pdfIn PDF document text
    • https://cdn.sqhk.co/soxuvezosapa/ijfijFF/corvette_driving_experience_las_vegas.pdfIn PDF document text
    • http://dakisemakegag.sportsontheweb.net/how_to_use_arduino_for_beginners.pdfIn PDF document text
    • https://cdn.sqhk.co/xonudutixova/jpha0qI/bridge_constructor_the_walking_dead_gameplay.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382209/normal_601f265d36a80.pdfIn PDF document text
    • https://cdn.sqhk.co/jaxugaveg/iczSghi/lego_batman_dc_super_heroes.pdfIn PDF document text
    • https://cdn.sqhk.co/mozulunilex/gfeie9b/48064477969.pdfIn PDF document text
    • http://pazujiz.mygamesonline.org/boxifufomabedotezipepuzo.pdfIn PDF document text
    • https://cdn.sqhk.co/zotenejek/CJPMGjb/10781935786.pdfIn PDF document text
    • https://cdn.sqhk.co/tosijoxopum/jil2udF/retuvomekesimatedotoref.pdfIn PDF document text
    • https://cdn.sqhk.co/rorazelesu/geifhbo/world_war_1_summary_for_students.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mifojizu.myartsonline.com/8285805873.pdfIn PDF document text
    • http://febiked.rf.gd/4113966744.pdfIn PDF document text
    • http://rupevisa.epizy.com/regejuzewoz.pdfIn PDF document text
    • http://feliruxitekul.epizy.com/android_17_dokkan_int.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_off0000cc13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC13 5992 bytes
SHA-256: 56ad95fe831d427d7e19598cdd19d2817b1e3fe039755518e8afad191d86f003
font_01_sfnt_off0000e06e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE06E 10336 bytes
SHA-256: 07140056bd0df9a4a4bdddc27bdfa82f1cfb8e266c266def8c8dc9e9a0546f20