Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a3c3b7ade3a3843…

MALICIOUS

PDF

68.0 KB Created: 2021-01-29 05:02:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 63ab936def344627a86253a38c6a05fd SHA-1: 1c1b8b25fb9ec22a4e168ff999a4c2db61779f12 SHA-256: 3a3c3b7ade3a3843acd1ee6eb215ac8eac1bf003bce4bce9d5654dfef992e962
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://seumenha.ru/aws?utm_term=cursive+handwriting+practice+sheets+generator PDF link annotation
    • http://canlisohbetim.net/moxojirigutenefadananupfbd9x.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410731/normal_5ff203ac9f1cc.pdfIn PDF document text
    • https://cdn.sqhk.co/lojosexotak/qKqgeP9/41763018837.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373509/normal_5fe0b5fcdc8db.pdfIn PDF document text
    • http://hookup157.fun/wevagudazagikn43j.pdfIn PDF document text
    • http://onlinekartiadesi.com/73660673255y2zbp.pdfIn PDF document text
    • http://sportplays.ru/scuf_gaming_custom_xbox_controllerkcszz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416665/normal_5feb0c1b1172f.pdfIn PDF document text
    • https://cdn.sqhk.co/gaxomawelej/hzDZpLE/jimedudarobusivexusiral.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381340/normal_5fe999d21b6fd.pdfIn PDF document text
    • http://lodixewovufosa.iblogger.org/balance_sheet_of_any_company_2018.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/rutufokedizon/holt_mcdougal_literature_grade_8_worksheet_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/tonisefoteka/easy_piano_jingle_bells_sheet_music.pdfIn PDF document text
    • http://fufezexu.epizy.com/80352499003.pdfIn PDF document text
    • https://s3.amazonaws.com/votuweroxigezog/welujenajubetume.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_off0000cc77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC77 5360 bytes
SHA-256: 3f37ad7a623f5051ef60b6a982d1a1bff1843407ee2b203b5ffce40a51781ecb
font_01_sfnt_off0000dec5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEC5 10628 bytes
SHA-256: 8dbfc52340cf94ef0b428f13bc9b7b28927ac9dd3f427211bf05f794755a83b7