Malicious PDF — malware analysis report

Static analysis result for SHA-256 28d19be6b73e5c9f…

MALICIOUS

PDF

73.3 KB Created: 2021-02-17 13:24:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 2053b5a82a70c265a67f2253b1c3fd72 SHA-1: 114c9a88575ad910dc07dd1904257bc00beee631 SHA-256: 28d19be6b73e5c9f3389eec8bf502227f52a98e3eb04914bf6dea11b79530ea6
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/wix?keyword=chemistry+review+book+answers+2016 PDF link annotation
    • https://tovawifigilad.weebly.com/uploads/1/3/0/7/130776196/litogife.pdfIn PDF document text
    • http://itanah.space/16203425685yfsg1.pdfIn PDF document text
    • http://ninufejuvosixir.22web.org/speed_queen_dryer_sh_error.pdfIn PDF document text
    • http://autobuff.xyz/arranging_numbers_worksheets_for_grade_3m897h.pdfIn PDF document text
    • http://vusejulene.iblogger.org/73624022196.pdfIn PDF document text
    • https://gazulaloruvuv.weebly.com/uploads/1/3/4/6/134693071/12137fd52e9a0a.pdfIn PDF document text
    • https://lopowizuxo.weebly.com/uploads/1/3/4/4/134438001/cf0828b.pdfIn PDF document text
    • https://lapidarofo.weebly.com/uploads/1/3/0/8/130874394/1507409.pdfIn PDF document text
    • http://usacarins.com/full_form_of_poke_in_gujaratix8pzk.pdfIn PDF document text
    • http://1gusevshop.space/sirekugasosibinavffvbh.pdfIn PDF document text
    • http://minuette.me/73544728628xoec1.pdfIn PDF document text
    • http://gogadozuxigode.iblogger.org/article_critique_example.pdfIn PDF document text
    • http://form-lnstagramcopyrightservices.com/gonaruvariwepewosojit5xkwz.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/xofalepelala/tojulewijugivamonebakaf.pdfIn PDF document text
    • https://s3.amazonaws.com/bokexizometun/mh_cet_2019_exam_form_date.pdfIn PDF document text
    • http://bibalaluroxute.epizy.com/slp_evaluation_report_sample.pdfIn PDF document text
    • http://vanuzavabew.epizy.com/cavendish_road_state_high_school_uniform_policy.pdfIn PDF document text
    • https://s3.amazonaws.com/jefazaxal/template_of_letter_of_intent.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_off0000d633.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD633 5736 bytes
SHA-256: a78772525816f04d76b83e34a4d731180211ebb835fc77ac0685267f0bbc5795
font_01_sfnt_off0000e99e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE99E 13992 bytes
SHA-256: 1c2aab1f969ebbb384f456d36aa079f345feded0b60fb68b66cb5bc4c46acac4