Malicious PDF — malware analysis report

Static analysis result for SHA-256 43015acc8770f6fd…

MALICIOUS

PDF

71.9 KB Created: 2021-02-22 13:42:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 8d5e731e372393a567a9ab0a25e29770 SHA-1: 5a57d87ac50ee6fd945769f53e0b00cefc56c598 SHA-256: 43015acc8770f6fd04f00602cd518a3bb39af143564fd03b2c60db45c74b68a4
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://jottigo.ru/wix?keyword=corruption+officer+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4424935/normal_60152e640d01c.pdfIn PDF document text
    • http://b4shop.icu/geluzupedfu14l.pdfIn PDF document text
    • http://ximasoj.22web.org/tiporejaxev.pdfIn PDF document text
    • http://vabuzunaseridal.iblogger.org/53279598695.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455884/normal_5fc96c6f83ebb.pdfIn PDF document text
    • https://cdn.sqhk.co/wojipezusax/j5jgjhk/cake_recipe_chocolate_coffee.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463824/normal_5fdf9b62c6d15.pdfIn PDF document text
    • https://cdn.sqhk.co/gudijupimeb/Ahcbzgc/the_curse_of_the_werewolves_full_game_download.pdfIn PDF document text
    • http://zipujesilan.22web.org/accident_incident_reporting_procedure.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481695/normal_5ffb0f83f297c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zofigofaka.epizy.com/henry_beaufort_school_uniform.pdfIn PDF document text
    • http://xesesopid.rf.gd/cisco_amp_for_networks_configuration_guide.pdfIn PDF document text
    • http://votofeki.epizy.com/eulogy_template_for_mom.pdfIn PDF document text
    • http://rubipupajet.rf.gd/melufatitekafugasar.pdfIn PDF document text
    • http://kisolapuri.rf.gd/69288436425.pdfIn PDF document text
    • http://zuvolape.epizy.com/free_after_effects_templates_wedding_titles.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_off0000e023.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE023 4636 bytes
SHA-256: aa9dc5a61f3f0da5dc8a700f317dda37ae1b56b4f1c965773e723f9ea78cb11f
font_01_sfnt_off0000effb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFFB 10188 bytes
SHA-256: 31e0526b032cea096015fda4eefdbd1b3b32f38ce4cad78165f72580854c4889