Malicious PDF — malware analysis report

Static analysis result for SHA-256 cda0bf9b160a9800…

MALICIOUS

PDF

67.5 KB Created: 2021-03-08 22:46:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: cfea2224f03eaf2ebe634705f16ca1b2 SHA-1: eb03d68feb270d222e8f8f056bdd6fffe474c355 SHA-256: cda0bf9b160a9800560257af5e62f7736e0f507f1f6c7c98078028b739be6a08
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://lozipotod.ru/award?keyword=ciencias+naturales+primaria+pdf PDF link annotation
    • http://dabejorugorazom.22web.org/corpus_linguistics_for_grammar.pdfIn PDF document text
    • http://japancar-sib.ru/does_walmart_have_white_christmas_treesoymvh.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497638/normal_5feaf6087e863.pdfIn PDF document text
    • https://cdn.sqhk.co/togokitaz/Vhcgfje/51805378167.pdfIn PDF document text
    • http://copyrightsupport-ig.com/keep_notes_app_not_syncingn7b05.pdfIn PDF document text
    • http://copyright-notice-ig.com/call_of_duty_ww2_online_split_screenajb0z.pdfIn PDF document text
    • http://digitalcalakk1.xyz/sarebar7t1i.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483354/normal_5fef768532525.pdfIn PDF document text
    • https://cdn.sqhk.co/pekobenew/gcih8ih/logo_maker_pro_logo_creator_generator_designer.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/vofadoloves/77852880428.pdfIn PDF document text
    • http://govogudumig.epizy.com/fepafaxesamunelitelavos.pdfIn PDF document text
    • https://d128792e-e0a8-46e0-98ed-b941f5da69b2.filesusr.com/ugd/b98abb_424ca616773648eaa9a7b85643f05ed9.pdf?index=trueIn PDF document text
    • https://ee897e78-a157-4eb5-8a47-d615096087a2.filesusr.com/ugd/113e89_eab9d96c55cb4e00bed2ef61669fb403.pdf?index=trueIn PDF document text
    • http://derekage.epizy.com/business_project_proposal_sample_free.pdfIn PDF document text
    • https://s3.amazonaws.com/veraxawewib/tswr_jc_cet_2019_results.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_off0000ca60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA60 5208 bytes
SHA-256: 14a0190c51e1b2ab494f88d25f331130e434a46af74627e34b0e586c2d05298d
font_01_sfnt_off0000dbfa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBFA 10976 bytes
SHA-256: 687055c4e75b7d389474e96e95b9c3884b050137c6459570e93cb4416b446da5