Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f1dfe6295af41fb…

MALICIOUS

PDF

74.5 KB Created: 2021-02-15 08:59:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 87ef1711164b4c2e859ca763aabb92ef SHA-1: 0f2ae5f5bc196186129b18d8293d8c0811b7b61c SHA-256: 2f1dfe6295af41fb650d8297b10d767a1dfa82d5cc3e344da7e971aafb7ad4b9
74 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://druttle.ru/wb?keyword=formal%20letter%20template%20format PDF link annotation
    • https://cdn.sqhk.co/gejixoneku/kyNhipH/world_freekick_tournaments.pdfIn PDF document text
    • http://gladkoe-telo.xyz/ejercicios_tiempos_verbales_espaol_para_imprimirfwum1.pdfIn PDF document text
    • https://kuboteradaragi.weebly.com/uploads/1/3/1/4/131482952/gobunofolunapawaxuma.pdfIn PDF document text
    • http://xtreme-sport.ru/7_wonders_of_the_world_20184e8ag.pdfIn PDF document text
    • https://cdn.sqhk.co/giwumazusew/ihDRWhb/fuxenulebiniladodunun.pdfIn PDF document text
    • https://dowibowaxetejoz.weebly.com/uploads/1/3/0/7/130740522/pomujot_biponugukak.pdfIn PDF document text
    • https://cdn.sqhk.co/texojijoraso/hbghqdz/13856204212.pdfIn PDF document text
    • https://cdn.sqhk.co/jomutepe/2jjghJz/darisufogevokanijup.pdfIn PDF document text
    • https://kujunegisim.weebly.com/uploads/1/3/1/3/131380440/9337477.pdfIn PDF document text
    • https://dapapakutuluj.weebly.com/uploads/1/3/1/3/131384169/9962520.pdfIn PDF document text
    • https://cdn.sqhk.co/tinipuded/1wuWV5Y/kaxowitezewunelokor.pdfIn PDF document text
    • https://cdn.sqhk.co/tasokuxu/AngeidM/fastest_bowler_in_cricket.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/nafamaragisek/characteristics_of_business_research.pdfIn PDF document text
    • https://s3.amazonaws.com/forupokisip/tamasha_marathi_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/fejakixoweka/dementia_treatment_nice_guidelines.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_off0000e7e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7E6 4824 bytes
SHA-256: d5069e5f61d98598379e22db85b99cfef2313a8cf5125e0ed99620bb2aec4da0
font_01_sfnt_off0000f838.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF838 11856 bytes
SHA-256: ee95a7122bff15e72fbeea7e77673b9817b178f8af269844de06e4cf38187f35