Malicious PDF — malware analysis report

Static analysis result for SHA-256 8dff3bdac7edfa36…

MALICIOUS

PDF

75.9 KB Created: 2021-02-22 20:40:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 6a01ab5b844e7cccbe29e97dc1c56ef2 SHA-1: 17ec49b6662752bee4d38c3e7fbfdddf5c660ff0 SHA-256: 8dff3bdac7edfa36327637a57d38a8a991d1bb86345f8a2cf96c944963905b96
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/123?utm_term=how+to+reset+cateye+velo+5 PDF link annotation
    • https://cdn.sqhk.co/xumobopore/dhcgghz/yelp_for_business_owners_login.pdfIn PDF document text
    • http://itasummer.fun/house_cleaning_checklist_template22ixs.pdfIn PDF document text
    • http://tuimag.ru/java_8_collections_tutorialmvfon.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393363/normal_5fee9c156ec9f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369162/normal_602f51544e0d1.pdfIn PDF document text
    • https://cdn.sqhk.co/naxupowu/ciaw9ha/wirajunovaxizamu.pdfIn PDF document text
    • https://jugafuxuxeg.weebly.com/uploads/1/3/2/7/132740719/4903738.pdfIn PDF document text
    • http://lg-supportteam.com/77880565358291we.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420589/normal_600604cf09806.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370054/normal_5fc744c85fc6d.pdfIn PDF document text
    • https://cdn.sqhk.co/rapawaferew/gnjaqjd/daily_routine_checklist_excel_sheet.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405895/normal_5fdf098dc7f0c.pdfIn PDF document text
    • https://cdn.sqhk.co/fapolokid/gj1X9jh/96382447914.pdfIn PDF document text
    • http://wtia.space/zuxamutozorisinawebiff2s9e.pdfIn PDF document text
    • https://xipakopubax.weebly.com/uploads/1/3/5/9/135966228/pudunisubivon.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/mesixadelomomo/sample_genealogy_research_report.pdfIn PDF document text
    • https://s3.amazonaws.com/vukusa/zemaduxalewuvekarepug.pdfIn PDF document text
    • https://s3.amazonaws.com/jiguwuzobozobaz/94475660906.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_off0000eafa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAFA 5132 bytes
SHA-256: bcb4a3d75de78d5af8d11103dc5b56d9b04d7f4ec122bf830592658df9851d8b
font_01_sfnt_off0000fc9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC9C 11084 bytes
SHA-256: 031fd591b762438840aee107b278115a2d11414ce08fcbed0ddf2de2b395702f