Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f9f5e0ea2485260…

MALICIOUS

PDF

68.7 KB Created: 2021-02-12 08:54:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: ba67f6a6f1474216b943ea6f3b909737 SHA-1: a522b629e4ca6dba437ebace4782fffe3d4a88c4 SHA-256: 8f9f5e0ea2485260d2829a5d63c7d440142978578558c9aa212b12fe315e57cb
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://seumenha.ru/wix?keyword=big+brother+over+the+top+episode+guide PDF link annotation
    • https://ralarisum.weebly.com/uploads/1/3/4/0/134040561/6173636.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471969/normal_601743ef4b1e6.pdfIn PDF document text
    • https://finiruxadaral.weebly.com/uploads/1/3/2/6/132680938/wufas.pdfIn PDF document text
    • https://wuzakadebetes.weebly.com/uploads/1/3/0/8/130814976/dofeguzefegoguk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369322/normal_600cec9e2cc94.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379982/normal_6000563c30e83.pdfIn PDF document text
    • https://cdn.sqhk.co/xefilelo/rpYjagh/yellow_checker_star_taxi_las_vegas.pdfIn PDF document text
    • https://wagimudo.weebly.com/uploads/1/3/4/4/134475497/xowudijuni-nejewepen-mulajeroped-zamilinipofup.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453720/normal_600fa3d9ef195.pdfIn PDF document text
    • https://duditoza.weebly.com/uploads/1/3/2/3/132302736/6843629.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366324/normal_6016c3ef07cc9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467576/normal_5fd7d64fa2597.pdfIn PDF document text
    • https://cdn.sqhk.co/vigesiji/NOVhggd/pics_collage_app_iphone.pdfIn PDF document text
    • https://cdn.sqhk.co/libuzewis/hj8iehc/vex_2_yepi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477635/normal_5ff1fcb4e7417.pdfIn PDF document text
    • http://onlajn-kassa.ru/star_wars_episode_vii_the_force_awakne2pn.pdfIn PDF document text
    • https://geliwesirodired.weebly.com/uploads/1/3/1/3/131382982/6093980.pdfIn PDF document text
    • https://cdn.sqhk.co/vafizolubev/Ejjfhfh/10043542436.pdfIn PDF document text
    • https://tatidadimu.weebly.com/uploads/1/3/5/3/135383915/9388906.pdfIn PDF document text
    • https://xidaxawefitorat.weebly.com/uploads/1/3/5/9/135958331/rurakunusobumo_digodabez_xijerosimefipen.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_off0000d0c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0C3 5228 bytes
SHA-256: 2edd74ff094f2fc904b07b54054a67e7830d023b4a99b00fd21914877bfa3379
font_01_sfnt_off0000e28b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE28B 10192 bytes
SHA-256: cf621557e6d3ab3d75470fc56f4a0cb56236b94ee13632add5852e351a9b1a42

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