Malicious PDF — malware analysis report

Static analysis result for SHA-256 09b43765ce470144…

MALICIOUS

PDF

72.3 KB Created: 2021-03-01 09:00:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 221c4879b44c8866391d917de9d06996 SHA-1: c971392d97022f34ab2c6599fe05609ca6a906f8 SHA-256: 09b43765ce470144168a61894113a68edd03040eb85fa9fda27236cd8bfe224c
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://fokemale.ru/award?keyword=how+to+prevent+high+blood+pressure+while+pregnant PDF link annotation
    • https://cdn.sqhk.co/baxoladipezu/4aKDhfm/personal_protective_equipment_plan_definition.pdfIn PDF document text
    • https://cdn.sqhk.co/mizogujuzo/jggg1ge/noble_girl_decorate_a_vacation_home_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4526930/normal_5fda83523d46b.pdfIn PDF document text
    • http://sibuvre.com/6413807160d3lyg.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387815/normal_5fe662d815cf6.pdfIn PDF document text
    • http://wunekixel.iblogger.org/17671917432.pdfIn PDF document text
    • https://cdn.sqhk.co/zigimovovu/GjkBTjj/back_to_the_moon_movie_download.pdfIn PDF document text
    • http://monufovaxuj.66ghz.com/watch_dogs_2_ps4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369143/normal_5fdb8e053ee25.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453741/normal_6024b8fe27fcd.pdfIn PDF document text
    • http://trujillostacoshop.com/7504586036jkt2d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369153/normal_5ffc49f1d06de.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/bezegoluzose/35926464102.pdfIn PDF document text
    • https://s3.amazonaws.com/wezukep/types_of_figurative_language_in_poetry.pdfIn PDF document text
    • http://polesirigileko.epizy.com/how_to_deal_with_anxious_stress.pdfIn PDF document text
    • http://rosoxejib.epizy.com/free_template_presentation_cover.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_off0000de09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE09 5472 bytes
SHA-256: 0df1140dc8928b534e19d878207abb29266884e3df44d9269f7ea6c0268a8ce1
font_01_sfnt_off0000f0ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0AD 10136 bytes
SHA-256: a13026e013a2d0e59109d9a78f7a3fda44982d55cdb06c4a13c2d1f858f3218c