Malicious PDF — malware analysis report

Static analysis result for SHA-256 3676b22c7d30bab5…

MALICIOUS

PDF

69.9 KB Created: 2021-03-12 03:56:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 41d65cf25ed7689726dacb89a7044538 SHA-1: bbde724263345571be3aa3daef5ae762a0fd3fb2 SHA-256: 3676b22c7d30bab58f794264c683a2d791d450cfd104a69469d6f7e90b399341
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://dugedepap.ru/award?keyword=perimeter+and+area+of+irregular+shapes+worksheet+pdf PDF link annotation
    • http://egosikenclub.com/foundations_in_microbiology_10th_edition_with_access_codee9prp.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420930/normal_5fd89bb163b1d.pdfIn PDF document text
    • http://tryadasert.online/way_down_we_go_freeqolzj.pdfIn PDF document text
    • http://avto-document.site/infection_control_policykmn8g.pdfIn PDF document text
    • http://kexedeziferu.sportsontheweb.net/jagopofegero.pdfIn PDF document text
    • http://logawedulukudan.mywebcommunity.org/dagijonefubuxazipagenega.pdfIn PDF document text
    • http://prizinsta24.site/cordless_phone_with_answering_machine_reviewsemzbt.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451375/normal_60110335ec51c.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/zoromexemuzid/zasivanepizujumuwexakuvov.pdfIn PDF document text
    • http://tagijonegularol.myartsonline.com/xumoxofokevoxekix.pdfIn PDF document text
    • https://033a7475-7ccb-45c1-8f1e-38fd320d48d0.filesusr.com/ugd/03a576_361b78e74d3c4de886774cb738df2a55.pdf?index=trueIn PDF document text
    • https://6200e599-3f2f-4e3e-ab45-e6977ed7e777.filesusr.com/ugd/f8de3e_53364cee547c4e1fb8dec0626d670740.pdf?index=trueIn PDF document text
    • https://4a1cfc67-5981-466d-a13b-75576fe7431f.filesusr.com/ugd/64e449_315c9bad85a348d3aeefe7e3a49aacc4.pdf?index=trueIn PDF document text
    • http://sidepojedava.myartsonline.com/analisis_del_libro_un_puente_hacia_terabithia.pdfIn PDF document text
    • http://kivozusemu.atwebpages.com/50915332213.pdfIn PDF document text
    • https://s3.amazonaws.com/sowirutelevolur/pupojufesanuk.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_off0000d412.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD412 5612 bytes
SHA-256: 93d306cc700c2a56cd86144480e768cc07bacd9d7c1c30c8ce3cff0aa134d90e
font_01_sfnt_off0000e712.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE712 10424 bytes
SHA-256: 5671d1534dfdacaf1eaec705e394417764af2e3a2d8b06b6047ac54ec351d506