Malicious PDF — malware analysis report

Static analysis result for SHA-256 e58ec777e43b8a1b…

MALICIOUS

PDF

69.0 KB Created: 2021-02-21 23:14:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 714fd87a5e85b19a6f6db45943f38ffe SHA-1: c80022838b00ba8643159dcd6466716bd8c97915 SHA-256: e58ec777e43b8a1b34e2aef1db64bedadd5d89d80d7dedc71e7cca803e0a2dae
246 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://gopoxigubujazu.weebly.com/uploads/1/3/0/9/130969754/donozezolazodeb.pdf.
  • 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://druttle.ru/wix?keyword=dead+trigger+hacked+account PDF link annotation
    • https://gopoxigubujazu.weebly.com/uploads/1/3/0/9/130969754/donozezolazodeb.pdfIn PDF document text
    • http://greyfruit.space/alan_walker_best_songs_2020fa9jj.pdfIn PDF document text
    • https://voxonevixes.weebly.com/uploads/1/3/4/3/134383310/nuvexuzotamapobomine.pdfIn PDF document text
    • https://subafeso.weebly.com/uploads/1/3/3/9/133986831/pezujifopobi_sokiwefamonuva_woroked_bokugefowedibe.pdfIn PDF document text
    • http://small-italy.space/what_does_ion_do_on_lasko_fancs9s7.pdfIn PDF document text
    • http://okclub.org/is_metal_straw_dangerousnkhxn.pdfIn PDF document text
    • https://dexixafavako.weebly.com/uploads/1/3/4/3/134348567/5399116.pdfIn PDF document text
    • http://interplast.ru/anger_of_stick_5_uptodown4l274.pdfIn PDF document text
    • https://gelowoxolup.weebly.com/uploads/1/3/4/7/134703814/69b17.pdfIn PDF document text
    • https://ruzunaxatan.weebly.com/uploads/1/3/4/3/134340268/dunabuxaz.pdfIn PDF document text
    • https://vukisopir.weebly.com/uploads/1/3/0/7/130776420/ef5c6.pdfIn PDF document text
    • http://gratoramaa.website/minecraft_1._14._4_optifine_forgekmzfe.pdfIn PDF document text
    • https://bunemanedadon.weebly.com/uploads/1/3/4/4/134476229/gobebavirezuxi_laganarudivipaw_papofetax_zulaxizakeja.pdfIn PDF document text
    • https://tedarotola.weebly.com/uploads/1/3/1/4/131482933/8765794.pdfIn PDF document text
    • https://degusatujetuz.weebly.com/uploads/1/3/0/8/130813325/sujokejer_fabefejewuz_vonejafot.pdfIn PDF document text
    • https://wisetigu.weebly.com/uploads/1/3/4/3/134357320/jubopirexa-mijudefurid.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_off0000cf8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF8C 5052 bytes
SHA-256: 11221a01441fb427b98ceeb509147f4957b3752b1dd9973a0a72b66c0d1a6ec1
font_01_sfnt_off0000e0bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0BF 11380 bytes
SHA-256: eabbeaf4b247f5b05166ca695e344722adb6c8f21c81eccc91485592b6f378e7