Malicious PDF — malware analysis report

Static analysis result for SHA-256 35fb35f115b7fda0…

MALICIOUS

PDF

41.7 KB Created: 2020-11-01 11:19:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: a98a6feba3c1aef860f88c4b173d111e SHA-1: d3a7d4f2e12f60e08582cd4ae4f30879447607e4 SHA-256: 35fb35f115b7fda03936b559d6fc892db72ac6ce1f4c20b7b0864f51706a3f25
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ttraff.link/pify?keyword=nightfall+on+the+river+des+moines+iowa In PDF document text
    • https://xazapadikud.weebly.com/uploads/1/3/1/8/131871762/ruzoxozuvudibobituk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370541/normal_5f8dc9e7b289f.pdfIn PDF document text
    • https://joxenawofin.weebly.com/uploads/1/3/4/3/134342561/jadab.pdfIn PDF document text
    • https://vidojibirulon.weebly.com/uploads/1/3/1/0/131070792/3029088.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414501/normal_5f9abe8659a63.pdfIn PDF document text
    • https://murufafutebe.weebly.com/uploads/1/3/4/4/134473477/kalugipum_wibusafopagu_tenunit_zulubijosidofip.pdfIn PDF document text
    • https://zewuxufasebi.weebly.com/uploads/1/3/4/3/134320084/kiluretateguj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366337/normal_5f8759fbe0233.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375210/normal_5f8ba1c62a502.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000060f3.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000060f3.bin)
    • https://cdn.shopify.com/s/files/1/0458/0373/3158/files/52928523525.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/34e8a9be-651d-42ee-9fc3-15bb384a5a3d/dawikivufinibulifujadagu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8782/9928/files/panasonic_kx-tgp500_manual_espaol.pdfIn PDF document text
    • https://s3.amazonaws.com/julaxel/international_boundary_lines_of_india.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 extracted file (font_00_sfnt_off000060f3.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000060f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60F3 5440 bytes
SHA-256: d7f77ca6384b9b79503414e8af5b884cb7e4d535d23de1d4f38d3d49d207ef9a
font_01_sfnt_off00007368.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7368 11736 bytes
SHA-256: 0e36ea663a0c7eb1539bae5bce4bbde4861f4e3ce48ca3393a994c6f10341ff2