Malicious PDF — malware analysis report

Static analysis result for SHA-256 61e5143cc820e7c2…

MALICIOUS

PDF

68.6 KB Created: 2021-02-18 03:40:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: ecad7943b1ad43108f0205ebea7f628a SHA-1: af3b65f2e09845e6556adabb48d8a405ecc9e6d6 SHA-256: 61e5143cc820e7c2de21117588a4924f8bb3c8e6e6bba24f0d65679dfe25a21c
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/wix?keyword=accounting+quick+study+guide+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4529087/normal_5fd5f4e01015b.pdfIn PDF document text
    • https://cdn.sqhk.co/jaruxabal/idVLieS/the_last_remnant_remastered_ps4_side_quests.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379237/normal_5fcf7b7a0f52f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4529697/normal_600c84a660abf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406223/normal_6022eacb9409f.pdfIn PDF document text
    • https://cdn.sqhk.co/kigowabalo/geidTvZ/mortal_kombat_xl_characters_not_showing_up.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488329/normal_601baa384a563.pdfIn PDF document text
    • https://cdn.sqhk.co/liregagibago/j9ghLha/stickman_legacy_of_war_3d_hack.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sametil.epizy.com/kuwox.pdfIn PDF document text
    • http://vemesivudaro.epizy.com/sapikogijatogovuf.pdfIn PDF document text
    • https://s3.amazonaws.com/fasomusogapovi/xanathar_s_guide_to_everything_druid_spells.pdfIn PDF document text
    • http://govatojajij.epizy.com/payroll_management_system_html_template_free.pdfIn PDF document text
    • http://mujigakevomo.epizy.com/binogaxolulufovudineg.pdfIn PDF document text
    • http://risopufegutala.rf.gd/wamifedoxifepexu.pdfIn PDF document text
    • https://s3.amazonaws.com/ninasivol/7144918108.pdfIn PDF document text
    • http://gepikadagutuv.epizy.com/fomisuzur.pdfIn PDF document text
    • http://kubivakov.epizy.com/klasifikasi_aspergillus_sp.pdfIn PDF document text
    • https://s3.amazonaws.com/vibasujefir/apoorva_kannada_full_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/xedewofuretujo/free_children_s_chore_chart_template.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_off0000cf26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF26 5264 bytes
SHA-256: 619ef0e2cdc50b52890bb94f00f02f56ef418e9466d41255cfbdc22767a00756
font_01_sfnt_off0000e133.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE133 10408 bytes
SHA-256: f1eb93f3ee85c3aa3d4b5646ecd9da4c54ea6b847284a0cc8fbcb00d2407982b