Malicious PDF — malware analysis report

Static analysis result for SHA-256 84b1118777d7e1eb…

MALICIOUS

PDF

69.9 KB Created: 2021-02-12 11:00:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 4f651bbb4912dc60da2a566f5a6eefc3 SHA-1: d42061a3d9ecd6f14a64436fed466adafa0999ca SHA-256: 84b1118777d7e1eb2f80a925e89ddcfca1cfca4ef2a937711cac5523301d2592
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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/123?utm_term=abco+auto+parts+phone+number PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4382789/normal_5fd10fa1091b7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379045/normal_5fd32a01e2ef3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483604/normal_5fcbe481a3b70.pdfIn PDF document text
    • https://cdn.sqhk.co/wodabakope/hhaiasC/92649065657.pdfIn PDF document text
    • http://gikadoketu.iblogger.org/sheet_metal_wall_cladding_nz.pdfIn PDF document text
    • https://cdn.sqhk.co/woferomot/aXgf10f/moto_x3m_bike_race_game_download_uptodown.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490739/normal_5fd0477565dfc.pdfIn PDF document text
    • https://cdn.sqhk.co/bubiwalifeda/hfTqVhb/synchronous_transmission_definition_in_communication.pdfIn PDF document text
    • https://cdn.sqhk.co/wijelukifap/hhja5d5/lost_river_cave_bowling_green_ky_weddings.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/zaxefemebidaz/types_of_leaf_margin.pdfIn PDF document text
    • http://fanixagef.rf.gd/vuvisu.pdfIn PDF document text
    • http://palisenedabelo.epizy.com/35425857205.pdfIn PDF document text
    • https://s3.amazonaws.com/gafedupeba/74902618368.pdfIn PDF document text
    • http://bevamixebigal.epizy.com/kemuwarajuxikofasujun.pdfIn PDF document text
    • https://s3.amazonaws.com/viboxikuz/25275590763.pdfIn PDF document text
    • http://nijunopuk.rf.gd/wewamikerolub.pdfIn PDF document text
    • https://s3.amazonaws.com/vososasoxumete/17678316128.pdfIn PDF document text
    • https://s3.amazonaws.com/xuzed/quotation_marks_exercises_with_answers.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_off0000d6b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6B6 5272 bytes
SHA-256: dff52df7c8164df3ae8950f05041b4fd1453ecd53ad2a86926a215421191cce3
font_01_sfnt_off0000e877.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE877 10028 bytes
SHA-256: 4787427d09fba1dab116159eb7f4f0e0ccd7d03078e41cab9f3aa83fbec86fbe