Malicious PDF — malware analysis report

Static analysis result for SHA-256 23e7563e330d7231…

MALICIOUS

PDF

76.7 KB Created: 2021-03-04 02:07:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: cb32e0b326b260ccc9b695fcb32e17ec SHA-1: 7599c9fd7ac94e814dbecb88bf2a59fac3ed9ef4 SHA-256: 23e7563e330d72312e4c0d930c6071443c24b93aba5ea02d8ff59418e90f94f5
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://lozipotod.ru/wix?keyword=heating+curve+of+water+worksheet PDF link annotation
    • http://bottlechainworld.com/xuzowowatasoteayo8y.pdfIn PDF document text
    • http://kleomaften.online/rinivugozotosawokudmwvl1.pdfIn PDF document text
    • http://ninotekega.mygamesonline.org/barizabijodiv.pdfIn PDF document text
    • http://baltika-trans.com/kundli_pro_filehippop2ea8.pdfIn PDF document text
    • http://tufuwavaziga.mygamesonline.org/what_is_the_best_portable_ac_unit.pdfIn PDF document text
    • http://mamontov-net.cc/135858978778hhb3.pdfIn PDF document text
    • http://haifaiv.ru/merge_file_to_onlinee9i3p.pdfIn PDF document text
    • http://onsideball.info/nortel_meridian_m3904_manuals7u8q.pdfIn PDF document text
    • http://clubstore.pro/693300777174frjb.pdfIn PDF document text
    • http://everydays.space/ley_general_de_titulos_de_credito_pagarexldz5.pdfIn PDF document text
    • http://parazepurafeza.medianewsonline.com/what_does_the_maple_leaf_symbolize_in_canada.pdfIn PDF document text
    • http://posiximuteg.sportsontheweb.net/international_business_college_lubbock_texas.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/bofake/obc_caste_list_in_maharashtra.pdfIn PDF document text
    • https://s3.amazonaws.com/ladiwuzetawedi/23742936158.pdfIn PDF document text
    • http://zitasixan.atwebpages.com/sedifujovotexu.pdfIn PDF document text
    • http://nitubak.atwebpages.com/tuvusisoxigudutebakevas.pdfIn PDF document text
    • http://vimixof.onlinewebshop.net/the_economics_of_money_banking_and_financial_markets_11th_edition_powerpoint_slides.pdfIn PDF document text
    • http://bavatesivo.myartsonline.com/86367509762.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_off0000ef1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF1F 5288 bytes
SHA-256: 75b6ade479950957b749f29c6c7eecdb20df09dbf388a633be449536563edc09
font_01_sfnt_off00010136.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10136 10736 bytes
SHA-256: 062e8e8dffc6fd1b2e4e5f3ecb22f7ef9ab9b0bbd81c421b4ea39417f4e53bff