Malicious PDF — malware analysis report

Static analysis result for SHA-256 15742248b7b84d49…

MALICIOUS

PDF

71.1 KB Created: 2021-02-26 09:14:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: ed022b940c8bf990ca7d43ed54619c81 SHA-1: be50ee85775f79bcb46212a71803e2bf8328e1af SHA-256: 15742248b7b84d490002eb0a8f9ab839f34c7df34381c30cde1e227a2ffd8e51
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://bologen.ru/award?keyword=love+yourself+trumpet+solo+sheet+music PDF link annotation
    • http://trydouche.xyz/123_media_player_classic_for_macj8b9a.pdfIn PDF document text
    • https://cdn.sqhk.co/zonelatu/ghcia4O/70064258950.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452161/normal_5fe5c32ce42b9.pdfIn PDF document text
    • http://ig-copyrightnotice.com/kadireirjda.pdfIn PDF document text
    • http://beririka.scienceontheweb.net/mumedonujotenokeges.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490273/normal_5fece59494af3.pdfIn PDF document text
    • https://cdn.sqhk.co/lokiwejawe/h8gdXK0/bevisugodibe.pdfIn PDF document text
    • http://vovpomnim.ru/heat_wave_richard_castlecidhg.pdfIn PDF document text
    • http://lnstagramcentre.net/raw_file_converter_ex_3.0_powered_by_silkypix_manualvjs75.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417995/normal_602f483141cbf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454821/normal_5fdc18c275dd4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444377/normal_6000a1c7bfb4a.pdfIn PDF document text
    • https://cdn.sqhk.co/kewukapugino/gjGjesi/tixitib.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000dab4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAB4 5148 bytes
SHA-256: 4059c8a6b2dffbac0a8c7dac5357e4e24afe7b13008959c2d0caeda0c5688914
font_01_sfnt_off0000ec25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC25 10412 bytes
SHA-256: 3724d034d8bed640d31346f3c21f754e64ffc06e56706d2598723ffb9fff1d02