Malicious PDF — malware analysis report

Static analysis result for SHA-256 98ccfea8f3e75880…

MALICIOUS

PDF

69.4 KB Created: 2021-02-19 00:47:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 93f9b896d7c9290bc5aafc2daacfc3d2 SHA-1: c628205046afdb5766b9a7fa22e3974c32f76274 SHA-256: 98ccfea8f3e75880af4d333444863c2bca9601e55b35a93619d260065d4467ea
184 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
  • 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://crophysi.ru/wix?keyword=virginia+tech+extended+spring+break+2020 In PDF document text
    • https://cdn.sqhk.co/lufelumad/igAZijY/kefiripabawu.pdfIn PDF document text
    • http://italy-small.space/kamepeguzitixujoov6m9.pdfIn PDF document text
    • https://cdn.sqhk.co/pufowuvikij/MheiWlJ/extreme_car_driving_simulator_2015.pdfIn PDF document text
    • http://aarbuz.space/dark_tower_movie_parents_guidev6lj6.pdfIn PDF document text
    • http://dkblogin-de.com/wipupugim8ysd5.pdfIn PDF document text
    • http://kpupnov.pro/51418200877ru6x3.pdfIn PDF document text
    • https://cdn.sqhk.co/diwomijo/gd1hbjg/best_name_creator_app_for_free_fire.pdfIn PDF document text
    • http://misstourist.info/jaws_bookzwehq.pdfIn PDF document text
    • http://riforemepenog.iblogger.org/budget_spreadsheet_example.pdfIn PDF document text
    • http://starconflict-game.ru/agl_energy_company6kknl.pdfIn PDF document text
    • https://cdn.sqhk.co/polidupokasu/1Guhihq/chicken_run_2_cast.pdfIn PDF document text
    • https://cdn.sqhk.co/fowujizul/bmhj1hi/hide_and_seek_online_y8.pdfIn PDF document text
    • http://passive-income.ru/72999684915wylk9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463308/normal_5fefbdceddd65.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447631/normal_5ff65c1990b8a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bumerezuwo.epizy.com/concrete_technology_viva_questions_and_answers.pdfIn PDF document text
    • http://gitipezusev.rf.gd/cholecalciferol_vitamin_d3_davis_drug_guide.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_off0000d13f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD13F 5812 bytes
SHA-256: ef217cd50892983a775b32953c7e37524b900560f68c7e1b8563c8ef161e6589
font_01_sfnt_off0000e507.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE507 10452 bytes
SHA-256: 4548e908d8936e5e594a59c0a136ef8519182cea8a320a53b1454c7045432ab2