Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff45b9689758f5de…

MALICIOUS

PDF

66.5 KB Created: 2021-02-10 05:08:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 5405aa7567cbcd70d70b78ced4b36854 SHA-1: 8a4f6e187d3f2f699ef167ce66de0feb864c0ea8 SHA-256: ff45b9689758f5dea682cb3d221a3716c2bf9474771c08ac6531e7258f574795
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://baarspo.ru/wb?keyword=free%20%20template%20brochure%20adobe%20illustrator PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4473322/normal_5fe2782e60621.pdfIn PDF document text
    • https://cdn.sqhk.co/surodamiz/aNgjggG/cupcake_factory_games_online.pdfIn PDF document text
    • http://verification-help.com/starbound_broken_protectorate_weapons8rs30.pdfIn PDF document text
    • http://c-advance.space/93136336061994qo.pdfIn PDF document text
    • https://cdn.sqhk.co/vixawutozama/cjwZhc4/steamship_authority_mv_nantucket.pdfIn PDF document text
    • http://detonic-buy.website/roland_barthes_theory_of_the_textblwt4.pdfIn PDF document text
    • https://cdn.sqhk.co/dibidoretu/Igjgimg/13235283482.pdfIn PDF document text
    • https://cdn.sqhk.co/dasisogi/jaogfYh/zodiac_signs_facts_virgo.pdfIn PDF document text
    • http://ogranicbio.space/good_strategy_bad_strategy_free_downloadu0061.pdfIn PDF document text
    • https://cdn.sqhk.co/bolukawet/S5n2gis/wifova.pdfIn PDF document text
    • https://cdn.sqhk.co/dagedazi/Rja0jeI/wozekevotuz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://guxasimedoki.epizy.com/43008982285.pdfIn PDF document text
    • http://xavitemis.rf.gd/brts_surat_full_form.pdfIn PDF document text
    • http://rixefixefasi.rf.gd/jovuposisovomanovosaz.pdfIn PDF document text
    • http://jodekiwob.rf.gd/expanded_form_math_worksheets_for_3rd_grade.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_off0000c7f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7F3 5408 bytes
SHA-256: 6ecc7c40e938fd599b48e290d13c274a4a86458c2222ac826694255bd69d9dee
font_01_sfnt_off0000da1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA1E 10212 bytes
SHA-256: faf9efafbdc2c6c51e89d770c10ba5b2aa751e1618ec3428cae839f525d216a2