Malicious PDF — malware analysis report

Static analysis result for SHA-256 57c8cc98b4afb7b6…

MALICIOUS

PDF

72.6 KB Created: 2021-03-08 19:48:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 672b6c240d1966649a4c044758f1bc8e SHA-1: ad96e94e4ad93d8210e2eebf4e8636f07bc3c650 SHA-256: 57c8cc98b4afb7b6dcbe936e2f216c23e2d4e01fdcf95ff81c590fc5a3fd56f5
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://soxebez.ru/award?keyword=descargar+diccionario+biblico+nelson+pdf PDF link annotation
    • https://cdn.sqhk.co/someteku/EhQPid0/black_red_and_yellow_horizontal_striped_flag.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481663/normal_6028122e8b859.pdfIn PDF document text
    • https://cdn.sqhk.co/pemejurove/idtvvia/flight_boarding_pass_online_air_asia.pdfIn PDF document text
    • https://cdn.sqhk.co/pugirunosamo/eiiogiD/25453170567.pdfIn PDF document text
    • https://cdn.sqhk.co/nolagutotato/jbjcInS/redistricting_game_worksheet_answers.pdfIn PDF document text
    • https://cdn.sqhk.co/xazururoxe/bYEMThf/2205741231.pdfIn PDF document text
    • https://cdn.sqhk.co/kutajanode/cS3Inei/wumojuguru.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465938/normal_5fe6ff78e5f00.pdfIn PDF document text
    • https://cdn.sqhk.co/xaloxezajaga/jgejhWN/smash_it_with_a_hammer_remix.pdfIn PDF document text
    • https://cdn.sqhk.co/gobajejuz/fxpcigP/kingpin_ball_python_for_sale.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377400/normal_5ffb1c19afd7a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://8eefcaf3-52f5-4123-8be5-b1f0aaeea45e.filesusr.com/ugd/1d3654_19fda477a9424df1bab5468f20dd49e5.pdf?index=trueIn PDF document text
    • https://0e75ab8e-f6a1-4360-bef2-1d94e06fde4e.filesusr.com/ugd/c0518c_f685ac827cb0431d9af7328334cfac2d.pdf?index=trueIn PDF document text
    • https://61090d85-22e6-4724-b969-52a17785150c.filesusr.com/ugd/952c2e_dd65268f7566485aa17a3950ffd262aa.pdf?index=trueIn PDF document text
    • http://woduzubede.epizy.com/pazodobewizesibaruxeliru.pdfIn PDF document text
    • http://wudobew.epizy.com/calvinism_vs_arminianism_debate_youtube.pdfIn PDF document text
    • http://nogojituwizax.epizy.com/what_is_metaphor_explain_with_examples.pdfIn PDF document text
    • https://78905da9-dd21-4190-abaa-c894c042e703.filesusr.com/ugd/851c7c_c48c98c1569f49698697361c526c9843.pdf?index=trueIn 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_off0000dabc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDABC 5464 bytes
SHA-256: 08fe6cd2da60dfd156e6914c1daa4cd9687240b8d2e1f69e9e95782b99f25dbd
font_01_sfnt_off0000ed5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED5E 11764 bytes
SHA-256: 7882dabd2b58a715d868178e1ce64d87d465404ecaca79f49f8c61c4325ee998

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