Malicious PDF — malware analysis report

Static analysis result for SHA-256 1877c7562749504b…

MALICIOUS

PDF

67.6 KB Created: 2021-03-11 13:40:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 350c608ba7fb53f2386c72068b12e19e SHA-1: 41e5b5d886559ca4d0a1e52773f0bc5c6c01b1d7 SHA-256: 1877c7562749504b9efd40465b6a01e108151f7e40479468540e200193d84f3a
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://vilenefex.ru/award?keyword=web+design+complete+course+pdf PDF link annotation
    • https://cdn.sqhk.co/towevefizub/grieSig/76241513862.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386092/normal_602969866fe71.pdfIn PDF document text
    • https://cdn.sqhk.co/nokulebepoba/bPNTQpW/66758731057.pdfIn PDF document text
    • http://jagodadexujuza.iblogger.org/how_much_does_an_ipod_cost.pdfIn PDF document text
    • https://cdn.sqhk.co/letonolomo/ebjf1Uc/wurukit.pdfIn PDF document text
    • http://rebituzugofebo.22web.org/berkshire_hathaway_annual_report_for_2002.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375353/normal_5ffdea5d9a546.pdfIn PDF document text
    • https://cdn.sqhk.co/podoxato/2PihQi8/29990941508.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460694/normal_6020369f89f30.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471234/normal_5ff3bc3e7fcf1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4497697/normal_5fcc04d59b70f.pdfIn PDF document text
    • http://topagudupowugi.iblogger.org/wide_format_presentation_size.pdfIn PDF document text
    • https://cdn.sqhk.co/wujakegu/dlij9ha/44323624271.pdfIn PDF document text
    • http://sawozuduridab.iblogger.org/rujametewo.pdfIn PDF document text
    • https://cdn.sqhk.co/kamozipu/ahfhbRQ/nasonefenapa.pdfIn PDF document text
    • https://cdn.sqhk.co/naxenunovus/ibji4ia/8879302358.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kukejisagev.epizy.com/aberdeen_airport_information_phone_number.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/50a72ff7-1077-46dd-b90b-3949747cf794/zero_hour_illustrated_man_summary.pdfIn PDF document text
    • http://jisidanosesozu.epizy.com/primeros_auxilios_psicologicos_en_ingles.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a697ad81-adcd-48f7-b5f0-7479c6f4a1e2/30_day_green_smoothie_challenge_results.pdfIn PDF document text
    • http://limirosu.rf.gd/tozizujipo.pdfIn PDF document text
    • http://lojonawaz.rf.gd/emerson_compact_fridge_and_freezer.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_off0000cc45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC45 5420 bytes
SHA-256: 86ffb9e5574f3dde194de787d44bde127a18cca209ca25251537bea2ddd91db8
font_01_sfnt_off0000deaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEAA 10036 bytes
SHA-256: 3b91df425b8ddc861de5d5c5cbb30484c901d1aadee9287f363a3d81a29e87e3

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