Malicious PDF — malware analysis report

Static analysis result for SHA-256 b05e4719f047b35b…

MALICIOUS

PDF

70.0 KB Created: 2021-02-26 01:17:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 544bcb835284ae2a013d2d1ea823d557 SHA-1: 29994d83b86f3f199afc3ff661fc20d35aaf2bfc SHA-256: b05e4719f047b35ba77aa5a7ccbaeac16ce88b984e36ba0b4f148024042f0d16
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/award?keyword=hp+deskjet+2620+cartridge+price+in+nigeria In PDF document text
    • http://xesabuzusoneb.66ghz.com/behaviourism_philosophy.pdfIn PDF document text
    • http://tipofeliluget.medianewsonline.com/how_old_is_my_magic_chef_refrigerator.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485823/normal_6010c28f66e19.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481676/normal_5fe1d82042812.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475987/normal_6021551ae54df.pdfIn PDF document text
    • http://sokolov.fun/286595343791gk48.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375891/normal_5ffbb792c31a8.pdfIn PDF document text
    • http://rivozuzeno.mywebcommunity.org/casio_fx-9750gii_graphing_calculator_price.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450250/normal_6018d06a078d5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zufabilo.rf.gd/kapixovawak.pdfIn PDF document text
    • http://sejofedavija.epizy.com/72469897392.pdfIn PDF document text
    • http://kofaxafogi.myartsonline.com/zoxezetebu.pdfIn PDF document text
    • http://kuwokezolofe.epizy.com/electrical_engineering_interview_questions_and_answers_ebook.pdfIn PDF document text
    • http://lugimes.epizy.com/dulowedoj.pdfIn PDF document text
    • http://zulewuf.rf.gd/gudelapopid.pdfIn PDF document text
    • http://xekalorebopir.rf.gd/trombone_duet_sheet_music_free.pdfIn PDF document text
    • http://natomilalusirof.rf.gd/lexisalojowifudonis.pdfIn PDF document text
    • http://tumozuj.epizy.com/branches_of_government_worksheet_answers.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_off0000d281.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD281 5740 bytes
SHA-256: ecea4423ae0c264c4fab185f913fac1f994eeb2271731472f07c2cbb8e504d42
font_01_sfnt_off0000e624.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE624 10712 bytes
SHA-256: ea6f84a0840606e8f409e040f62962b5d004a5596d8a1d7749df6c21bf3b4ad5