Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc59bb91d863d3bf…

MALICIOUS

PDF

72.9 KB Created: 2021-02-26 02:09:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 444105404ba4272116f7f2d3937c7132 SHA-1: a941ced15e929ee73a6d8c26add4b9a0640bab7a SHA-256: bc59bb91d863d3bff3641944f3c3669be8e8d461bab0dbfb83e382d438bfa36d
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://seumenha.ru/award?keyword=cuanto+es+5+11+pulgadas+en+centimetros PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4483610/normal_5fc61ed2aab4f.pdfIn PDF document text
    • https://cdn.sqhk.co/xurawupo/jcjekqn/machine_robo_rescue_episode_10.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457014/normal_601ad55c3ae53.pdfIn PDF document text
    • https://luketekovagitor.weebly.com/uploads/1/3/4/2/134236109/6769684.pdfIn PDF document text
    • https://gagujaxerubu.weebly.com/uploads/1/3/5/9/135976614/roperaxufub.pdfIn PDF document text
    • https://jexafowasefuxuv.weebly.com/uploads/1/3/4/5/134588667/cccbac9ad2e4c.pdfIn PDF document text
    • http://merovew.xyz/51336092995rwpx5.pdfIn PDF document text
    • http://about-igsupport.com/marvel_movie_filmyhitoyzci.pdfIn PDF document text
    • http://xsale.trade/whats_the_definition_of_landnuyqv.pdfIn PDF document text
    • http://legionmone.xyz/best_language_to_learn_coding_2020btngk.pdfIn PDF document text
    • https://pidakulosa.weebly.com/uploads/1/3/4/3/134391257/jujovesaw-roxujo-pefodixi.pdfIn PDF document text
    • https://cdn.sqhk.co/puzokopu/cIzoghR/59524943318.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370778/normal_603824f755d61.pdfIn PDF document text
    • https://cdn.sqhk.co/vemegunir/aa70fhd/36849768494.pdfIn PDF document text
    • https://cdn.sqhk.co/gisatajofo/hGgjdhE/femupagudodifogetexil.pdfIn PDF document text
    • https://vaseviga.weebly.com/uploads/1/3/3/9/133986607/087b693f8e8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366375/normal_601f03cfa4cbf.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/netinuwa/nfl_fantasy_rankings_2018_bleacher_report.pdfIn PDF document text
    • https://s3.amazonaws.com/zabevog/suboni.pdfIn PDF document text
    • https://s3.amazonaws.com/mizeteb/72274194256.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_off0000dcb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCB9 5476 bytes
SHA-256: 468ecf6b9e6751ce6b868f3f5eff4cf2a175b8726fedeb94b197f0c2d30ff87d
font_01_sfnt_off0000ef44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF44 11420 bytes
SHA-256: 8e23d99ee1eafe82f55257ad28349476b732eab84f9a3fec409041ef747d52ec