Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0a8e5cb7e085610…

MALICIOUS

PDF

67.4 KB Created: 2021-02-22 17:55:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: b155f6bcb09847f9fdbd14948e46badd SHA-1: 3a4f895eac7a7afe06137451f47ff24a9ff8f383 SHA-256: d0a8e5cb7e0856102a4e46d17df93f77e20183597579253cb2544965c82a68d8
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://druttle.ru/wix?keyword=reading+for+today+concepts+4+answer+key PDF link annotation
    • https://zotamitogimida.weebly.com/uploads/1/3/0/7/130775261/99bf1baafe82b59.pdfIn PDF document text
    • https://tulitexuson.weebly.com/uploads/1/3/1/6/131636586/datovokoledodino.pdfIn PDF document text
    • https://xuwosanilenerev.weebly.com/uploads/1/3/4/9/134900173/zefomirimuzikap-gudeja-ziduzixubaveda-nejidugixo.pdfIn PDF document text
    • https://bopidojosonek.weebly.com/uploads/1/3/1/3/131384153/pugodavulilivebopo.pdfIn PDF document text
    • https://joxisewegiwazev.weebly.com/uploads/1/3/4/6/134669132/mubos.pdfIn PDF document text
    • https://cdn.sqhk.co/pizililiv/HziiThg/modajoz.pdfIn PDF document text
    • https://cdn.sqhk.co/jajotulix/jg7ifY4/besumazi.pdfIn PDF document text
    • https://cdn.sqhk.co/xetilibul/hdiigih/96642939635.pdfIn PDF document text
    • https://cdn.sqhk.co/vixemujomu/cBhhQic/74460471477.pdfIn PDF document text
    • https://wojazaxu.weebly.com/uploads/1/3/4/5/134589930/vutaxunanezixeb.pdfIn PDF document text
    • https://cdn.sqhk.co/zubixola/Vgj5gcd/creative_destruction_hack_ios_diamond.pdfIn PDF document text
    • https://nogojajefe.weebly.com/uploads/1/3/5/3/135314992/wigupoturezidofe.pdfIn PDF document text
    • https://cdn.sqhk.co/livisade/i0giVja/rukenuvidaga.pdfIn PDF document text
    • http://galajikimozupu.iblogger.org/busubivabepe.pdfIn PDF document text
    • https://fimudelowuj.weebly.com/uploads/1/3/1/4/131455024/4fdef7072d86c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://taputideletu.rf.gd/are_smart_scales_worth_it.pdfIn PDF document text
    • https://s3.amazonaws.com/mivokozibu/baahubali_2_songs_tamil_mp4.pdfIn PDF document text
    • https://s3.amazonaws.com/sirilagewuga/renal_dialysis_guidelines.pdfIn PDF document text
    • http://tosivasode.epizy.com/6453801293.pdfIn PDF document text
    • https://s3.amazonaws.com/bupesejirijejus/likiwijifakuvotawolula.pdfIn PDF document text
    • https://s3.amazonaws.com/fekazudabo/housekeeping_maintenance_report_sample.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_off0000c8ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8ED 5644 bytes
SHA-256: e87479dc8e1933cce8fb18e24c2be7468d58d6661440c336c7e6df7884c62740
font_01_sfnt_off0000dc6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC6D 10424 bytes
SHA-256: bb08bbc7c371a69ed585f6c3c0461d61037fa2f981602a14b001d161ba0ce933

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