Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3025ba71426f70d…

MALICIOUS

PDF

72.9 KB Created: 2021-02-13 19:54:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: cce6b1728188796485563c8944026f6d SHA-1: 38d742bf74551217d660ffde43cc62a1c79a01a5 SHA-256: c3025ba71426f70d97e464c335914298d88ab627d78e72763732f8e896394e48
192 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=mastering+the+trade+second+edition+pdf+download In PDF document text
    • https://cdn.sqhk.co/zubavagi/iiekih4/godajuxulajun.pdfIn PDF document text
    • http://znalomstvavip.site/manga_avatar_creator_onlineuvncl.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368767/normal_601fa077adffb.pdfIn PDF document text
    • http://keto-s1.com/best_android_weather_app_uk_2019tqr8s.pdfIn PDF document text
    • http://fipifet.iblogger.org/nakirokob.pdfIn PDF document text
    • http://center-san.ru/8256268268kv890.pdfIn PDF document text
    • https://cdn.sqhk.co/mifodirula/ezrahgQ/11647990247.pdfIn PDF document text
    • http://bobr.space/romezusotosufaxirononowi6fmpy.pdfIn PDF document text
    • https://cdn.sqhk.co/lexoxuxoluvi/diagdia/4k_gaming_wallpaper_valorant.pdfIn PDF document text
    • http://pijonon.22web.org/burning_series_app_ipad.pdfIn PDF document text
    • http://bachanalytics.com/best_new_caption_status_for_fb8wzdl.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412889/normal_5fe4ed9d77015.pdfIn PDF document text
    • https://cdn.sqhk.co/disumuneriva/jgdhdhi/zombie_city_defense_2_wiki.pdfIn PDF document text
    • https://cdn.sqhk.co/pemoxeriko/Oho2jhd/satasozixexutonunate.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451551/normal_5ffc7f2797dd7.pdfIn PDF document text
    • https://cdn.sqhk.co/temejikowewa/djijdfZ/22703352179.pdfIn PDF document text
    • https://cdn.sqhk.co/kifuzopeko/eJs5gjp/jomebum.pdfIn PDF document text
    • https://cdn.sqhk.co/nowovadizeb/N1hgT8P/flight_world_war_2_123movies.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463308/normal_5ff873d940026.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dawutanarav.epizy.com/50237802299.pdfIn PDF document text
    • http://puviseb.epizy.com/project_risk_management_process_template.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_off0000e082.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE082 5512 bytes
SHA-256: c8c86b22fc564017e1423a22aa6c5139e591187f572f131b826435bb4ecfdbd4
font_01_sfnt_off0000f35c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF35C 10212 bytes
SHA-256: bb4301550b58a3e7ced4b2190b785dc571a741cb45819a43fc19014bafe95de5