Malicious PDF — malware analysis report

Static analysis result for SHA-256 16ff04210403d895…

MALICIOUS

PDF

35.7 KB Created: 2020-11-09 09:55:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 4fa308cf50817d719b6245174ddbc6df SHA-1: f91d73bab9a703adba3e471eab569ff16f2a7bf9 SHA-256: 16ff04210403d89516579b178fc608149c1b739d9cf7d07b0f63aa5020df841a
66 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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://trafffi.ru/123?keyword=alex+from+ready+to+love+ig PDF link annotation
    • https://lajukigoguxozu.weebly.com/uploads/1/3/4/5/134529026/fesosopidofepe_potux.pdfIn PDF document text
    • https://kelobutino.weebly.com/uploads/1/3/0/9/130969458/2161657.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://zasunaj.files.wordpress.com/2020/11/kifonukaxo.pdfIn PDF document text
    • https://s3.amazonaws.com/wazorixekunafob/menigisigi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5346c53e-e5d8-4852-9f39-aca5c01298b1/woxerubiwif.pdfIn PDF document text
    • https://s3.amazonaws.com/tutapaxi/38470146968.pdfIn PDF document text
    • https://saridejawe.files.wordpress.com/2020/11/46503178667.pdfIn PDF document text
    • https://s3.amazonaws.com/mozirolinitaje/aptitude_questions_and_answers_for_gate_exam.pdfIn PDF document text
    • https://s3.amazonaws.com/debiwelof/leininger_s_theory_and_nursing_metaparadigm.pdfIn PDF document text
    • https://s3.amazonaws.com/zizene/auto_mechanics_books.pdfIn PDF document text
    • https://tuxabavijig.files.wordpress.com/2020/11/37940387668.pdfIn PDF document text
    • https://finoxomajir.files.wordpress.com/2020/11/88549499011.pdfIn PDF document text
    • https://s3.amazonaws.com/lakadutof/the_oxford_dictionary_of_synonyms_and_antonyms_2nd_edition.pdfIn PDF document text
    • https://likuzow.files.wordpress.com/2020/11/40264502684.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_off00004b75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B75 5268 bytes
SHA-256: 0de65e36b94451cec584880580cf827e89eda2bcf1b315cab28297f5a7d56fe4
font_01_sfnt_off00005d61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D61 10816 bytes
SHA-256: df56a65021e93b61c21d8cec500aae45380724af01f98dd2115de48c04918c02