Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c7d97407edcffc7…

MALICIOUS

PDF

74.3 KB Created: 2021-02-22 12:03:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 2be6519410ee7371573a5756a829b625 SHA-1: d01ba21059d24710ab2005ce8bcf80df3c11bbea SHA-256: 7c7d97407edcffc76e4edf9266392199237633d3f9c7e74b55104f7b545bd503
126 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
  • 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://jacksth.ru/123?utm_term=dxg-517v+hd+camcorder PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4471475/normal_6030616e98b3b.pdfIn PDF document text
    • http://citruss.space/gefenazululivub3wx8p.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452621/normal_6021aadf2b23b.pdfIn PDF document text
    • http://devlp.design/843675380263h775.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477620/normal_5fd64845db9e0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478422/normal_5fcf51b354739.pdfIn PDF document text
    • http://xebobimifu.22web.org/86162414953.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469834/normal_5fd1015576b50.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370286/normal_5ffa35151a11e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464862/normal_5fda234a8e11d.pdfIn PDF document text
    • http://natur-green.fun/riwoxoxogafuwanufulanurik39oyq.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406213/normal_5fdaff6189df4.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/sitok/border_radius_android_xml.pdfIn PDF document text
    • http://xujalev.rf.gd/76608966575.pdfIn PDF document text
    • https://s3.amazonaws.com/rizezobabub/ada_gestational_diabetes_guidelines_2017.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_off0000e6b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6B9 5556 bytes
SHA-256: bd0e150c9637add3149bbf8e4332528908e766dfdc97c649d80eee972160e03d
font_01_sfnt_off0000f99e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF99E 10236 bytes
SHA-256: 223f99aeab3c9304174d4df89dd2e353d5e718ced4f60e7890f8f1f2e45a43fb