Malicious PDF — malware analysis report

Static analysis result for SHA-256 6cbb095ff2fb6529…

MALICIOUS

PDF

79.7 KB Created: 2021-01-19 06:13:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 16fc99050b9811d72184151718a5768b SHA-1: 4c85f5aaee8424aad7b921acdf03b01e454669a2 SHA-256: 6cbb095ff2fb65295824f6ef84dedd4ddc51064deaa689349c59ab3572f5bb97
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=winter+garden+book PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4368740/normal_5f91a6416654c.pdfIn PDF document text
    • https://cdn.sqhk.co/pixafosabow/ihfgjY0/95655647963.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368467/normal_5f8c0bb42117d.pdfIn PDF document text
    • https://cdn.sqhk.co/bulunazi/djMmpVn/tech_news_site_crossword.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366398/normal_5fa6142c4a12d.pdfIn PDF document text
    • https://cdn.sqhk.co/gimexigerub/OhcL3gi/emergency_vet_chatham_kent.pdfIn PDF document text
    • https://site-1260098.mozfiles.com/files/1260098/elmhurst_primary_school_aylesbury_ofsted_report.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368985/normal_5f88011daede1.pdfIn PDF document text
    • https://site-1208026.mozfiles.com/files/1208026/super_snake_mustang_0-_60.pdfIn PDF document text
    • https://cdn.sqhk.co/sebixodof/ahe7jiI/73762617129.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383445/normal_5fcce907bac5d.pdfIn PDF document text
    • https://cdn.sqhk.co/genizataxom/igBhigg/buy4baby_buy_sell_baby_products_online.pdfIn PDF document text
    • https://cdn.sqhk.co/vapelomusanu/hgIUohb/kitisixalumasuvu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mezotake.epizy.com/darkness_rises_hack_android.pdfIn PDF document text
    • https://s3.amazonaws.com/jadudusujuje/fugifinisejefosazagam.pdfIn PDF document text
    • https://s3.amazonaws.com/baxunaf/92140192990.pdfIn PDF document text
    • http://ritofeli.epizy.com/xatamibiromu.pdfIn PDF document text
    • http://gofosuxubajo.epizy.com/85344331664.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_off0000fba3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBA3 5000 bytes
SHA-256: 92ff5ac16aa247212c133d2c26bf490c82c312451783abdf6df28170b057609e
font_01_sfnt_off00010ccc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CCC 10372 bytes
SHA-256: 38e5232b06d535f2abb878b41b161edf3b1a9d055a49a8717e07f67120deddf3