Malicious PDF — malware analysis report

Static analysis result for SHA-256 b21bf7f3a9755ddd…

MALICIOUS

PDF

70.0 KB Created: 2021-03-03 03:09:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 747da4ffdde71c0eb92620263d71edcf SHA-1: d860d48825256e1ded9253f439f6b16e79607940 SHA-256: b21bf7f3a9755ddd1a2ab48b65cb4403ef54aaa0f337bc3fcaea92be1583cc70
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jumiwimov.ru/award?keyword=joe%2527s+crab+shack+menu PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4392864/normal_5fee004373c75.pdfIn PDF document text
    • http://rubka.space/behringer_ultracoustic_acx1000_acoustic_amphr5pt.pdfIn PDF document text
    • https://cdn.sqhk.co/mezutorixo/zjg2ghs/escape_room_board_game_temple_of_the_aztec.pdfIn PDF document text
    • http://dommasters.site/apowermirror_for_pc_crack77dw9.pdfIn PDF document text
    • http://letxxnx.org/749496345085jlsx.pdfIn PDF document text
    • http://italia-doc.space/fuwawopipofinolrjrvz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500665/normal_5fd62c7f16427.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419204/normal_6026ecd05f2d3.pdfIn PDF document text
    • http://xevusezes.medianewsonline.com/present_perfect_simple_and_continuous_exercises_3_eso.pdfIn PDF document text
    • http://ceiling48.ru/bodybuilding_programs_for_beginnersxvrud.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://lajixowamimexo.epizy.com/is_mba_worth_it_after_30.pdfIn PDF document text
    • http://xenivut.epizy.com/sajabipemotapobodidor.pdfIn PDF document text
    • http://pojozija.onlinewebshop.net/81209734722.pdfIn PDF document text
    • http://pivefev.rf.gd/73025675487.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ca27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA27 4988 bytes
SHA-256: 0948b449dc150ed9ba800f85e25ed130ce1d1f711113b75dd699f05f70efba3c
font_01_sfnt_off0000daec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAEC 10112 bytes
SHA-256: 95b8777e4da7acda035dbd2535766d8e1c36ae63e21d992a9c9d26d1a6300f77
font_02_sfnt_off0000fd8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD8F 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2