Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f16e6e1d6ae85e9…

MALICIOUS

PDF

78.0 KB Created: 2021-02-09 08:39:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 827170de20fbea02b4ace13c9dbcdac7 SHA-1: 39dc317d48bf608b56b09af83ee5dbdf9b8a6a3f SHA-256: 8f16e6e1d6ae85e9b71fde1872cfc196cba9f636854894192c06987638bf4651
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://bologen.ru/wb?keyword=elevated%20push%20ups%20form PDF link annotation
    • http://dafilor.iblogger.org/61020009084.pdfIn PDF document text
    • http://everydayy.fun/autonomous_vehicle_sensors_conference_2020h2rfa.pdfIn PDF document text
    • https://cdn.sqhk.co/bimepefav/eheBjjG/44359082197.pdfIn PDF document text
    • http://movoxazukum.22web.org/miwuzodutuzadonuzebuvegi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471945/normal_60205fd393b17.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412584/normal_6008b4aa69c2b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375885/normal_5fcc633a4014b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404293/normal_5fd9044d42899.pdfIn PDF document text
    • http://alisabor.design/bigonumiqd0wh.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484804/normal_601a22d6a4dea.pdfIn PDF document text
    • https://cdn.sqhk.co/lezenelu/jfnjfgi/u_miami_acceptance_rate_ed.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459188/normal_6004d698bed9e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gixosuwali.rf.gd/aeroflot_russian_airlines_flight_information.pdfIn PDF document text
    • http://maxitopatedawo.rf.gd/balance_sheet_classification_accounts_payable.pdfIn PDF document text
    • http://fididebezewigex.epizy.com/linear_graph_worksheet_gcse.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_off0000f4ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4AE 5300 bytes
SHA-256: e6b7710d39b9f33addada37514e7e5223a78bfcd9ea7f9228b17cfac657bbe76
font_01_sfnt_off00010695.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10695 10708 bytes
SHA-256: d182f1ee04c259c6902dfb75b1e2b406433f042e23841de1ca5cb8c0be4923f1