Malicious PDF — malware analysis report

Static analysis result for SHA-256 85f4b56bb888e5bd…

MALICIOUS

PDF

78.0 KB Created: 2021-03-02 02:43:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: e4128d874c8b4405f3b5eeb8761e6d02 SHA-1: a3641e915bfe3b30ee34132a2a4cd3e9a722b715 SHA-256: 85f4b56bb888e5bdd588ce335737605a99b6b88318f4a847216f3dbc91e76a7d
126 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
  • 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://nipisod.ru/strik?utm_term=cie+a+level+chemistry+periodic+table PDF link annotation
    • http://joweponula.mywebcommunity.org/why_is_my_car_alarm_keep_going_off_for_no_apparent_reason.pdfIn PDF document text
    • https://cdn.sqhk.co/vinogusi/cCjethj/36127135719.pdfIn PDF document text
    • http://feludekinopotas.scienceontheweb.net/romaine_lettuce_calories_per_serving.pdfIn PDF document text
    • https://sovanomi.weebly.com/uploads/1/3/5/3/135337195/7409894.pdfIn PDF document text
    • http://pikaromabunoteb.iblogger.org/how_to_reset_the_casio_watch.pdfIn PDF document text
    • https://xikixofifot.weebly.com/uploads/1/3/4/5/134597691/fuxobu-bugatejano-keguloba.pdfIn PDF document text
    • http://rostov-mobile-doctor.ru/unir_varios_en_uno_foxitogbem.pdfIn PDF document text
    • http://pexiwaz.iblogger.org/jotun_solvalitt_data_sheet.pdfIn PDF document text
    • https://cdn.sqhk.co/petawelesup/Mcrhbhb/battle_islands_commanders_mod_apk.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/zijivevip/social_media_icon_set_psd_free.pdfIn PDF document text
    • http://fitagijup.epizy.com/81741168533.pdfIn PDF document text
    • https://s3.amazonaws.com/sezebepit/98971772674.pdfIn PDF document text
    • http://kubatejabudebuj.rf.gd/comentario_biblico_online_gratis.pdfIn PDF document text
    • https://s3.amazonaws.com/mexijegedakol/67890721220.pdfIn PDF document text
    • http://wojodiguf.rf.gd/corporation_of_chennai_property_tax_declaration_form.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_off0000f4fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4FD 5520 bytes
SHA-256: c0c11440968a52196de95fb345e948ec893c4a5555c4eda0b88d50d58b3724ca
font_01_sfnt_off00010795.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10795 10528 bytes
SHA-256: e03a0aac1c7a980f841ecc10126c2b8abd001f8b7baa3b35af7d7d8021bf874f