Malicious PDF — malware analysis report

Static analysis result for SHA-256 773ae446e768b986…

MALICIOUS

PDF

78.8 KB Created: 2021-02-16 07:10:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: ce15f497ed163dac0b905a516b2472ab SHA-1: 8029f8ec538bf483b6733fe9f042e0978e299f64 SHA-256: 773ae446e768b986885e85128e0a94aeb19358b613b53f5f4797ca0c2b709d5e
74 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=how%20to%20use%20a%20humidor%20box PDF link annotation
    • http://ses-sanobrabotka.ru/star_wars_a_new_hope_release_datejfigw.pdfIn PDF document text
    • https://cdn.sqhk.co/ruzewekafan/kYhdjgh/98293175105.pdfIn PDF document text
    • https://cdn.sqhk.co/jovowosifo/ijIghjg/wars_of_mughal_empire.pdfIn PDF document text
    • https://cdn.sqhk.co/gugivusofed/cia0jgC/popipezizivesitunokazo.pdfIn PDF document text
    • http://getbuiss.online/vc_redist_2013_x649uvp9.pdfIn PDF document text
    • http://itdiscount.info/zizunuvp3p33.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470231/normal_5fe495d371340.pdfIn PDF document text
    • https://cdn.sqhk.co/nopawuwam/QhifEfM/dark_side_of_the_moon_logo_meaning.pdfIn PDF document text
    • https://cdn.sqhk.co/xupasutejos/PjehhlL/61514862127.pdfIn PDF document text
    • http://shoop-fl.ru/pharmaceutical_dosage_forms_capsuleshh6l5.pdfIn PDF document text
    • http://kernig.store/marakubrfc89.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jifedefujodu/simple_machines_inclined_plane_worksheet_answers.pdfIn PDF document text
    • http://lolefijulakemi.rf.gd/vba_excel_italiano.pdfIn PDF document text
    • https://s3.amazonaws.com/kesumasaka/tuwivixupa.pdfIn PDF document text
    • https://s3.amazonaws.com/selivuvumepaveb/asistente_personal_de_google_apk.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_off0000f91d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF91D 5292 bytes
SHA-256: ebe7f12326999dbcecde35102cce3fdacb2f3e4dab9d8739d0d7baff4d8a4c52
font_01_sfnt_off00010afa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AFA 10412 bytes
SHA-256: 8bff4357b5859487a76f4f2b1c541421e9385a356c462f1e771249dd3cbf4065