Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bf6e0a8805e04fb…

MALICIOUS

PDF

82.2 KB Created: 2021-02-14 07:23:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 7bb8ecbc8e06cef4f27eca7941030e92 SHA-1: 4e3e9685b9f935be64b8f60d48fd423915fc5a2c SHA-256: 7bf6e0a8805e04fb43d02808f774a17451636ae07258af2882bee440da32bb74
126 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
  • 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://leonvi.ru/aws?utm_term=old+school+runescape+fishing+guide+2018 PDF link annotation
    • https://cdn.sqhk.co/wepurodapike/gjifAid/spinal_stenosis_exercises.pdfIn PDF document text
    • https://cdn.sqhk.co/nimotixalulo/biahfhi/lego_city_toy_story_4.pdfIn PDF document text
    • http://finansi-7.online/pandora_black_apk_download7uyzr.pdfIn PDF document text
    • https://cdn.sqhk.co/famuxina/ggjemgc/cops_vs_robbers_prison_escape.pdfIn PDF document text
    • https://cdn.sqhk.co/kibutonap/hhDhehj/11324698338.pdfIn PDF document text
    • http://vukosam.22web.org/android_9_pie_samsung_galaxy_j5_2017.pdfIn PDF document text
    • https://cdn.sqhk.co/kisereta/IggphaG/universal_paperclips_guide_stage_2.pdfIn PDF document text
    • http://golulim.iblogger.org/pebugi.pdfIn PDF document text
    • http://wusapibixabupak.iblogger.org/fijelotaxewekerudujado.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/gezejoputiwinu/vojivefotelog.pdfIn PDF document text
    • https://s3.amazonaws.com/lixasifasi/5601745032.pdfIn PDF document text
    • https://s3.amazonaws.com/dojonuta/super_fund_performance_june_2018.pdfIn PDF document text
    • http://nulabede.epizy.com/congruent_supplements_theorem_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/libusamagowuvo/allegro_pcb_design_tutorial.pdfIn PDF document text
    • http://rufegojokod.epizy.com/davis_drug_guide_sign_in.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_off00010235.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10235 5964 bytes
SHA-256: f119d9486cd831d08afdc5006d128692f0257fd265dac19c60aad2ee657fe640
font_01_sfnt_off0001167c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1167C 11048 bytes
SHA-256: 539b75ab344d4acc6b94d14805e2794c5c336552cf3e958c1c312db0b7e1a98d