Malicious PDF — malware analysis report

Static analysis result for SHA-256 be1621726a1eef42…

MALICIOUS

PDF

70.2 KB Created: 2021-02-16 20:41:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: fda205f96b9f9e56604c890b536f6532 SHA-1: 6854755f74eb75970dbca85725825be1410b91bc SHA-256: be1621726a1eef421a653bf1b833af6ff73e999c41e5f22ee48c0e721822f98e
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/strik?utm_term=qualitative+research+design+grounded+theory+example In PDF document text
    • https://cdn-cms.f-static.net/uploads/4465396/normal_60150123bc0b2.pdfIn PDF document text
    • https://cdn.sqhk.co/seranowe/hfycjbC/followers_for_instagram-_instafollow_tracker_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/tumitibira/ggo7icx/fallout_board_game_card_library.pdfIn PDF document text
    • https://cdn.sqhk.co/tipefimex/hggMgd5/79407036447.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462096/normal_5ffb171559a3a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369305/normal_5fdd76cc44136.pdfIn PDF document text
    • https://wixepivod.weebly.com/uploads/1/3/0/7/130775856/jobigejujegobawe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488103/normal_5ff0c6ffcc2ff.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4497369/normal_5fcccac2e4599.pdfIn PDF document text
    • https://cdn.sqhk.co/tikisudolo/eibMaMU/chocolate_pudding_recipes_easy.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gizejofak.epizy.com/search_google_account_by_username.pdfIn PDF document text
    • https://s3.amazonaws.com/regovadeje/47865900518.pdfIn PDF document text
    • http://fifusudevop.rf.gd/best_shooter_games_2019_android.pdfIn PDF document text
    • http://tuwemajufa.rf.gd/kujalexopomitukekixukap.pdfIn PDF document text
    • http://lekirajadu.epizy.com/tesamutuwefasipofoneg.pdfIn PDF document text
    • http://kobepok.epizy.com/fanning_island_surf_report.pdfIn PDF document text
    • http://gevorewububew.epizy.com/budgeting_spreadsheet_ideas.pdfIn PDF document text
    • http://jomerijokera.rf.gd/taroranov.pdfIn PDF document text
    • http://qhr.sagepub.com/]2In 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_off0000d3df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3DF 5776 bytes
SHA-256: b8826687d428a3cb9417f6074c262f7d0c79910d123e40a8e2e59a7e222b5b29
font_01_sfnt_off0000e76d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE76D 10696 bytes
SHA-256: 2575c872b37e2d16fce443e346acbcedc97acab5e68ac654cf01bbd4a4e4cef6

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