Malicious PDF — malware analysis report

Static analysis result for SHA-256 4369ed54b11ba34c…

MALICIOUS

PDF

72.8 KB Created: 2021-02-07 02:43:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 8cadb40fbcee660bd67c59062bbf1fce SHA-1: 582795e0d246fd30d328b926178306529afcc061 SHA-256: 4369ed54b11ba34c7e4375c65c7cea66513e6eab9514563668ff89737c940d8b
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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/wb?keyword=video%20er%20app%20firefox PDF link annotation
    • https://bokakuvuzojoji.weebly.com/uploads/1/3/4/3/134351808/4fd85.pdfIn PDF document text
    • https://palujaburufo.weebly.com/uploads/1/3/2/7/132740236/zivod.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392658/normal_5ff56aa806a97.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366348/normal_601baa3c7b324.pdfIn PDF document text
    • https://cdn.sqhk.co/lukedivibeb/gfOdhjc/65627956991.pdfIn PDF document text
    • http://show-visitor.xyz/path_of_exile_frame_dropsr0qke.pdfIn PDF document text
    • http://mediaverifiedbadge.com/birthday_card_psd_template_freex71tk.pdfIn PDF document text
    • https://cdn.sqhk.co/dujujema/wicY9hg/fruit_ninja_3d_apk_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385427/normal_5fd84067b5eda.pdfIn PDF document text
    • https://xivenisulebitok.weebly.com/uploads/1/3/1/3/131378814/462264.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4498404/normal_600506fb03021.pdfIn PDF document text
    • http://prizyivnik.ru/bikefasad6r2qj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367916/normal_5fcd1b67ce76f.pdfIn PDF document text
    • https://bijimuxe.weebly.com/uploads/1/3/4/8/134886115/sovikoniranisu-limala.pdfIn PDF document text
    • http://daimontimur.org/bixewilibovirepitotetemiyph2f.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_off0000e1e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1E0 4860 bytes
SHA-256: 62a1464243f6d797390711cb9e21f271f3776e41183bcc009dcf7e6b1a5bcd9d
font_01_sfnt_off0000f281.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF281 10808 bytes
SHA-256: 1811e8d8307ee4abebeeb0f632a5120c7878f7e36f1c0895517f318bf7abea6e