Malicious PDF — malware analysis report

Static analysis result for SHA-256 226dca3a1f66a435…

MALICIOUS

PDF

72.5 KB Created: 2021-02-28 23:36:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 8d0b00d44e84f74b6e0f205def046579 SHA-1: 6b27dc8a4ea65f019fef4bc0157a0a34b71645e3 SHA-256: 226dca3a1f66a4352561a7d4f782a538cf2ed3cb3859f122786db090938c85ee
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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://dugedepap.ru/award?keyword=letra+da+musica+once+i+was+seven+years+old PDF link annotation
    • https://cdn.sqhk.co/xelalizogim/ggcY3jg/wizukila.pdfIn PDF document text
    • http://tumuduwaju.mypressonline.com/smart_paint_repair_cost.pdfIn PDF document text
    • https://vumetubav.weebly.com/uploads/1/3/0/7/130776444/jadasibaru.pdfIn PDF document text
    • https://cdn.sqhk.co/ragekasa/Xhajfhg/super_simple_nursery_rhymes_dvd.pdfIn PDF document text
    • http://kamikofonem.mygamesonline.org/pearson_anatomy_and_physiology_lab_manual_answers.pdfIn PDF document text
    • https://cdn.sqhk.co/fusozuwalas/kgho2jc/legends_football_league_2020_season.pdfIn PDF document text
    • https://romiwewigases.weebly.com/uploads/1/3/2/6/132682929/353196.pdfIn PDF document text
    • https://zidipezes.weebly.com/uploads/1/3/5/3/135314083/moxafit.pdfIn PDF document text
    • https://povilaromegew.weebly.com/uploads/1/3/4/4/134486615/fibigorelebuguva.pdfIn PDF document text
    • https://cdn.sqhk.co/kubepugemaki/ijG6vif/lamemodokugadedapomujiz.pdfIn PDF document text
    • https://cdn.sqhk.co/botonerepap/gcgijie/bitowawopotef.pdfIn PDF document text
    • https://nasuzezigoma.weebly.com/uploads/1/3/4/5/134587751/xozeniwajolir.pdfIn PDF document text
    • https://sifejolo.weebly.com/uploads/1/3/1/4/131410009/jadowasasedim-jazapi-wugezu-meregobiregamu.pdfIn PDF document text
    • http://tefitagesev.mypressonline.com/xadaje.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/betefowubevat/addendum_to_agreement_template.pdfIn PDF document text
    • https://s3.amazonaws.com/nelizenejakarug/happy_birthday_friend_in_korean_informal.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_off0000dfc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFC9 5280 bytes
SHA-256: 0a0292d3811ca5738cb5a1a96ddb9521893701dea6424bb31a8b5ecda394355b
font_01_sfnt_off0000f1c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1C3 10292 bytes
SHA-256: 733b1d016a9b14a87585d29442f18f1b0fb8fe345943e12dd1430af85851d10e

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