Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf08788114a40372…

MALICIOUS

PDF

68.4 KB Created: 2021-02-26 09:54:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: 945ed863933b5e01e2e7083ec9b6405a SHA-1: 4c0c981a7ec3d733974c36dd5a6367d8a691f315 SHA-256: bf08788114a40372a2a646a0ca2483daa1f5c39ba168ca13f6faa59ff38b25cf
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://bologen.ru/award?keyword=keurig+model+k40+filter PDF link annotation
    • https://cdn.sqhk.co/xakelafu/TwwTih8/1._fm_top_hits_2000_radio.pdfIn PDF document text
    • https://cdn.sqhk.co/zizaratijiga/jggitAQ/30839229999.pdfIn PDF document text
    • https://lejegibovijidup.weebly.com/uploads/1/3/1/4/131438293/gepawisibelorapud.pdfIn PDF document text
    • https://penogefuf.weebly.com/uploads/1/3/2/7/132740618/jugobominavovos_dikevapute_nilavekigase.pdfIn PDF document text
    • https://cdn.sqhk.co/fugovigul/jehcFii/gang_clash_mod_apk_1._0._6.pdfIn PDF document text
    • https://xesukalo.weebly.com/uploads/1/3/5/3/135311970/defekupanida.pdfIn PDF document text
    • https://cdn.sqhk.co/nemizuxe/ihh7Nii/car_racing_seats_for_sale_cheap.pdfIn PDF document text
    • https://cdn.sqhk.co/zesonixiv/wjcbfjd/real_stickman_crime_2_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/dakizenewa/elifoIJ/emirates_auction_llc.pdfIn PDF document text
    • https://disadoxamegipu.weebly.com/uploads/1/3/4/5/134527150/xaxemusisagifojuwub.pdfIn PDF document text
    • http://zodatowafe.getenjoyment.net/jojelopel.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369631/normal_5fff3b8c25972.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://magegefopo.atwebpages.com/auto_fundamentals_12th_edition_ebook.pdfIn PDF document text
    • https://s3.amazonaws.com/silubebebefuju/bitexubamonanuf.pdfIn PDF document text
    • https://s3.amazonaws.com/pazovugal/dafitoxefajenar.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_off0000cf32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF32 5100 bytes
SHA-256: 4e373013dc3bedd8b6bd3292a2fb4ceeabf460a4bad64bec7cf60aa76e3a98e7
font_01_sfnt_off0000e082.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE082 10724 bytes
SHA-256: c2cb3310f8d421243a6eb740cccff370bda0dcbeb68d701645627d279a099c6f