Malicious PDF — malware analysis report

Static analysis result for SHA-256 7721a4cb8c465720…

MALICIOUS

PDF

69.4 KB Created: 2021-03-07 09:16:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 392632017a4d2865a28b7b208d0705bc SHA-1: 50ef362795907ce523fb8619a370382dbe851577 SHA-256: 7721a4cb8c46572000cc015ca4527c5e869fbda23d7ff5e5e3cad0cf8e1765d6
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • 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 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=is+billy+elliot+on+netflix+canada PDF link annotation
    • https://cdn.sqhk.co/badexejos/gdOlijQ/the_impossible_quiz_book_chapter_2.pdfIn PDF document text
    • https://cdn.sqhk.co/nedabuke/XicThi7/mutant_drum_modules.pdfIn PDF document text
    • https://cdn.sqhk.co/kevamubeminu/ohbifQH/17267202477.pdfIn PDF document text
    • http://com-signto2.xyz/meluxikt1l1.pdfIn PDF document text
    • https://cdn.sqhk.co/lepowabog/kwijfif/wupuxonikinixewafonaja.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384469/normal_60217824d9822.pdfIn PDF document text
    • http://wisitens.online/dedavexixibujetawuxixolelkbjz6.pdfIn PDF document text
    • http://avtoshtorki.shop/18236732081bm5i7.pdfIn PDF document text
    • https://cdn.sqhk.co/jenireni/gjegiii/phone_ringtones_download_free_mp3.pdfIn PDF document text
    • https://cdn.sqhk.co/famagafe/rIiigcg/vutinubekeduwufufujodap.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369653/normal_5fe92e42ab64b.pdfIn PDF document text
    • https://cdn.sqhk.co/nibidawe/CjasZdX/bofozevot.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489583/normal_600dacd295f40.pdfIn PDF document text
    • https://cdn.sqhk.co/gixotagokezu/SiiohbM/nijifabukibavekigeb.pdfIn PDF document text
    • https://cdn.sqhk.co/resesexiraf/UAeqiaU/noseviwegomolavix.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408992/normal_5fe70058aecb9.pdfIn PDF document text
    • http://megatorg.ru/836424706343vpcp.pdfIn PDF document text
    • https://cdn.sqhk.co/tibakekavero/hgieCjg/58302457576.pdfIn PDF document text
    • https://cdn.sqhk.co/logubaxe/mvhaLji/51620819088.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://2eda13a9-9e0f-47dd-bbfa-a9a5028a3314.filesusr.com/ugd/61c57f_a76fb2f9dd3f4bcd918dee62d3d8124f.pdf?index=trueIn PDF document text
    • https://bf5f3f24-cfb9-4aec-9f01-83e6d863dc5b.filesusr.com/ugd/1f4526_4afe29cb70c24e188eb7eae0157d0781.pdf?index=trueIn 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_off0000d319.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD319 5164 bytes
SHA-256: 91c2b8044fe782070bf52bab38344a66e5ff59bd52a4dd8342626f5bbb9a6f6a
font_01_sfnt_off0000e4cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4CF 10468 bytes
SHA-256: b69b132bf4403a2234c43f52f84f99c41772dd37aa4b39ab860b0f850969c4e7

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