Malicious PDF — malware analysis report

Static analysis result for SHA-256 95531bcc24021272…

MALICIOUS

PDF

72.6 KB Created: 2021-02-28 15:54:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: a8c8289b92138d911e392a452e4015ce SHA-1: 8ac989da08759dd73d7ec59854929f0bb303732b SHA-256: 95531bcc240212722a6a3203b44f9f0f819cb2a512d831da85a42f1e66a761e1
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://kuzutuzo.ru/award?keyword=bose+solo+5+remote+apple+tv+code PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4425738/normal_5fd9c8830d283.pdfIn PDF document text
    • http://golosa-spasibo.ru/waste_management_system_project_reportvyy02.pdfIn PDF document text
    • http://teasmall.space/microsoft_word_creating_document_sections05pd3.pdfIn PDF document text
    • http://bapatavusirave.mygamesonline.org/the_shining_book_vs_movie_wikipedia.pdfIn PDF document text
    • http://accueilcmb.com/2006_bmw_330i_msrpifppq.pdfIn PDF document text
    • http://tafugegajotu.mygamesonline.org/how_much_do_physical_therapists_make_monthly.pdfIn PDF document text
    • http://re-capital.ru/le_plan_comptable_mauritanien0b3jp.pdfIn PDF document text
    • http://koxelovanalimu.getenjoyment.net/20512379113.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385213/normal_60127eba36afe.pdfIn PDF document text
    • http://jamotovoxut.mywebcommunity.org/17580735321.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vejegaba.atwebpages.com/what_does_managerial_accounting_focus_on.pdfIn PDF document text
    • https://s3.amazonaws.com/rizijubovapuk/cardiotonicos_farmacologia.pdfIn PDF document text
    • https://s3.amazonaws.com/zepifudoxapo/bangla_new_natok_2018_mp4.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_off0000de3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE3F 5452 bytes
SHA-256: 4af17927a649a2086430607f29df932f2b5fcf68e486c4ccd2d53d8ef0bf6f86
font_01_sfnt_off0000f0b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0B7 10860 bytes
SHA-256: 46c9a136a7712c0f4ab9ad76d650595e465bf0a2a0a5f30f2928442ed08e7385