Malicious PDF — malware analysis report

Static analysis result for SHA-256 4bf1affd3a94e37d…

MALICIOUS

PDF

66.2 KB Created: 2021-03-05 02:12:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 7979d849ddd1c4a28c79dabc23d06262 SHA-1: 8aa4b89d0f3fdc02905256509438b16af8fc735e SHA-256: 4bf1affd3a94e37d133dce887d23b27dbe6f292d83cbde607a73c980797a8c98
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://zajinet.ru/award?keyword=how+to+fix+kenmore+oven+door PDF link annotation
    • https://xitapazutirubej.weebly.com/uploads/1/3/4/8/134882608/e3d3a425f7f5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477379/normal_5fdbcbe433653.pdfIn PDF document text
    • https://xixivisowokote.weebly.com/uploads/1/3/2/8/132814838/1d8094c094e17.pdfIn PDF document text
    • http://wonozudobitisog.scienceontheweb.net/finubufojixiwaboxo.pdfIn PDF document text
    • http://mazanatur.space/discord_dyno_bot_commandsx4koz.pdfIn PDF document text
    • https://lotunesu.weebly.com/uploads/1/3/0/9/130969364/xosupag.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386335/normal_60215042ef8c3.pdfIn PDF document text
    • http://idealica-columbia.site/sportsmax_app_free_download5wc69.pdfIn PDF document text
    • http://talakam.space/40493855355yta7q.pdfIn PDF document text
    • http://dawexefif.getenjoyment.net/five_love_languages_test_for_singles.pdfIn PDF document text
    • http://lusolakidareve.mywebcommunity.org/turbo_mailer_license_key.pdfIn PDF document text
    • http://vostokzapad.su/how_to_reset_epson_l210_printer_ink_pad_is_at_the_end_of_its_service_life3e10p.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414871/normal_5fe788ab29ad7.pdfIn PDF document text
    • http://rumigiwataj.getenjoyment.net/how_to_descale_a_cuisinart_keurig_coffee_maker.pdfIn PDF document text
    • http://kekijojovif.sportsontheweb.net/christian_premarital_counseling_questions.pdfIn PDF document text
    • https://juposuwidamad.weebly.com/uploads/1/3/1/4/131406248/4508385.pdfIn PDF document text
    • https://renikafajuwigag.weebly.com/uploads/1/3/4/3/134317319/polejefaresusufe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rupesujutiwu.myartsonline.com/chemical_reaction_symbol_latex.pdfIn PDF document text
    • http://ribibepope.epizy.com/lefupirunerone.pdfIn PDF document text
    • http://maxewunuwujep.rf.gd/honeywell_series_3_portable_wireless_doorbell_manual.pdfIn PDF document text
    • http://nejesezape.myartsonline.com/is_cbr2f2_polar_or_non-polar._explain.pdfIn PDF document text
    • http://vefodipox.myartsonline.com/23366503881.pdfIn PDF document text
    • http://pudubekij.epizy.com/kruger_national_park_guided_game_drives.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_off0000ca62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA62 4880 bytes
SHA-256: c6cfc7493f3787fcf434e8f7d6bb86f0fcfb33800fa9d2fa0c2fdf42bfce6408
font_01_sfnt_off0000dafb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAFB 9520 bytes
SHA-256: 9c903198d64e34fd83746fafbe0825bfd7a988cc60699287cd0f9e8aa697ffea

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