Malicious PDF — malware analysis report

Static analysis result for SHA-256 76ddad73cab26ed7…

MALICIOUS

PDF

69.6 KB Created: 2021-02-17 20:10:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 7b13c1200769a7171f0e598c81c5398e SHA-1: b6ce09da3f062db34dc13aa10b4a11181b5887a0 SHA-256: 76ddad73cab26ed7dac4ab9f93258f98d6678e2e43e089cb8368ef4d19b2ab49
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://yafferge.ru/123?utm_term=what+does+out+of+mind+out+of+sight+mean In PDF document text
    • http://fitokaps.xyz/lagivedodejudukozutezam4zhce.pdfIn PDF document text
    • https://cdn.sqhk.co/pubamegumox/eji22qn/titan_quest_atlantis_walkthrough.pdfIn PDF document text
    • http://trylait.pro/three_billy_goats_gruff_puppet_templates2w55u.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495988/normal_600243d3b856b.pdfIn PDF document text
    • http://whysmall.space/disaster_area_inspection_report_form1ni7n.pdfIn PDF document text
    • http://lenudes.com/durigujetaxafedozegifx8ra7.pdfIn PDF document text
    • https://cdn.sqhk.co/kibutonap/ugijw2g/aquifer_recharge_runoff.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368741/normal_5ff8da0b72974.pdfIn PDF document text
    • https://cdn.sqhk.co/duzefodaf/a7Hgeih/download_furies_last_escape_mod.pdfIn PDF document text
    • https://cdn.sqhk.co/xudekutof/bQfgfia/national_defence_academy_careers.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467564/normal_6001404c6c6af.pdfIn PDF document text
    • https://cdn.sqhk.co/fodibaniwe/XjjwigV/27448958298.pdfIn PDF document text
    • https://cdn.sqhk.co/sunalikefazo/ihijihc/79002064784.pdfIn PDF document text
    • http://afracheat3.xyz/ukulele_chord_chart_free_download729ly.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://maligufaribez.epizy.com/marshall_stockwell_manual.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_off0000d3d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3D4 5204 bytes
SHA-256: b663031d1bb6503796c795175bfb69cdc6281389027ad61a0ec8d12206c8d1b0
font_01_sfnt_off0000e57c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE57C 10488 bytes
SHA-256: a5467568f598df977ed01649adee9335760fac404a8561d7a915f7947a854ea6