Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b8e8cef83650610…

MALICIOUS

PDF

84.5 KB Created: 2021-02-28 19:48:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 8d7d6732169ffcb91ac20e0456d67a81 SHA-1: da7f4317b474dbe457bbcd471498cab6e32ec3dd SHA-256: 6b8e8cef8365061033211952d296d640ecbd3f4d7ba68ddc565b3a042340f567
66 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://baarspo.ru/award?keyword=cien+a%25C3%25B1os+de+soledad+audiolibro+capitulo+17 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4453540/normal_5fca7776bc96d.pdfIn PDF document text
    • http://torchland.xyz/punusirame1s8a4.pdfIn PDF document text
    • http://wordwild-store.com/xipanerezojlcce.pdfIn PDF document text
    • https://vapevaka.weebly.com/uploads/1/3/1/4/131407737/sekesovojo.pdfIn PDF document text
    • https://ziwuvofoxovexo.weebly.com/uploads/1/3/1/1/131163777/35cc0834b8ed.pdfIn PDF document text
    • http://gromstroy.com/74371549891akje1.pdfIn PDF document text
    • https://mezamavizasiv.weebly.com/uploads/1/3/5/3/135312133/9b2c0046822c.pdfIn PDF document text
    • http://vasakuso.sportsontheweb.net/echo_weed_eater_wont_start_after_winter.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443610/normal_60344a657088b.pdfIn PDF document text
    • https://xujopikaxatanow.weebly.com/uploads/1/3/4/8/134850499/3019570.pdfIn PDF document text
    • http://nebofimanigi.sportsontheweb.net/95415688644.pdfIn PDF document text
    • http://winoorama.space/robert_nozick_anarchy_state_and_utopia_freek4l26.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367632/normal_5fc5aefed2d43.pdfIn PDF document text
    • http://vubitim.sportsontheweb.net/swot_analysis_sample.pdfIn PDF document text
    • http://4d-5d.com/toyota_camry_trd_for_sale_san_diegoureb1.pdfIn PDF document text
    • http://ultra0.space/mirofeok28o.pdfIn PDF document text
    • http://dikegebe.mygamesonline.org/joseph_campbell_best_selling_book.pdfIn PDF document text
    • http://poroda.site/lubokudegofuwm7drh.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_off00010c4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C4E 5456 bytes
SHA-256: 650913b073c263f1d3acda778b0b9838dce4e4f01ebc5cee06eced3796d37f18
font_01_sfnt_off00011ea0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11EA0 11172 bytes
SHA-256: 0bf1c5ec6e4fd87747925da4d41cf82ed8d3e08d4073853a2a46e4e16aa8a5b7