Malicious PDF — malware analysis report

Static analysis result for SHA-256 58df1ab7387a8230…

MALICIOUS

PDF

45.4 KB Created: 2020-11-08 07:43:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 7423c81c05e4ce5d0027fddfa654598f SHA-1: 766b4034174096736b28b27ff194fe2d14471827 SHA-256: 58df1ab7387a8230aee0cddeb7b4d615779c78154a3f34321c8a52c2da6fec40
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://trafftec.ru/123?keyword=roblox+cool+free+models PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4392650/normal_5f9851c977d33.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413231/normal_5fa5b90216038.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367633/normal_5fa20dbb5bcd2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://laridemada.files.wordpress.com/2020/11/19800741954.pdfIn PDF document text
    • https://tilidefixof.files.wordpress.com/2020/11/coulombic_attraction_pogil_answer_key_extension_questions.pdfIn PDF document text
    • https://wojadinito.files.wordpress.com/2020/11/calculo_de_area_integral_definida_exercicios_resolvidos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/41c1f5fe-10f0-447b-8e9a-4c4f6012aa31/delonghi_turbo_convection_oven_manual.pdfIn PDF document text
    • https://puvisazo.files.wordpress.com/2020/11/32845032647.pdfIn PDF document text
    • https://wotenopofe.files.wordpress.com/2020/11/budixaw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c346a09-cb4b-459e-862a-fa30e9988552/why_is_my_fridge_leaking_water.pdfIn PDF document text
    • https://piresuvidiso.files.wordpress.com/2020/11/genuwutotufotelatexe.pdfIn PDF document text
    • https://likuzow.files.wordpress.com/2020/11/40264502684.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a131bee9-cbb1-4cf4-b25c-f9c37379bc5d/69398701008.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_off0000749c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x749C 5172 bytes
SHA-256: b6ed70401d45b20deb7d8885a7f3cb5722668d499329ed46b05d9e648a9303c2
font_01_sfnt_off00008627.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8627 10268 bytes
SHA-256: 8d077dc1bf4f9bce3d9a37810eb3badbbab957950ac7fcf9ce27067e768a9ca2