Malicious PDF — malware analysis report

Static analysis result for SHA-256 24c098da4567ab82…

MALICIOUS

PDF

72.5 KB Created: 2021-02-24 01:21:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 4c80dc5a4921ea76c0179e68c47de317 SHA-1: 776b7a6e7dfe1e45811eb9349ac53b4210eea2b1 SHA-256: 24c098da4567ab8243a73f42f75bceabd7cee1f78820b571223565b370ce247e
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://crophysi.ru/wb?keyword=what%20is%20indian%20coast%20guard%20navik%20gd In PDF document text
    • https://cdn-cms.f-static.net/uploads/4457849/normal_602d62c2b35a8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476273/normal_600b4bdac46c5.pdfIn PDF document text
    • http://1-bog.ru/glencoe_algebra_1_answer_key_chapter_7s00mt.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377388/normal_60173252587dc.pdfIn PDF document text
    • http://1eyvgo.xyz/5th_edition_players_handbook_roguer2byv.pdfIn PDF document text
    • https://cdn.sqhk.co/revogonesox/dgehgjb/boomerang_di_instagram_apk.pdfIn PDF document text
    • http://instapriz24.site/314551181267pa88.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420924/normal_6018f0803ac8e.pdfIn PDF document text
    • http://bestcreditcheck.info/free_grammar_coloring_sheets_middle_schoolq0ji3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450038/normal_5ff69dd3c945f.pdfIn PDF document text
    • https://cdn.sqhk.co/xavonepez/igcoLha/crossword_game_solver.pdfIn PDF document text
    • https://cdn.sqhk.co/depadukat/bCHLGgf/fitness_e_bodybuilding_pro_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/fujotojaxob/jajchhr/apple_gift_card_into_cash.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mafilijesov.epizy.com/how_much_does_a_55_inch_samsung_plasma_tv_weigh.pdfIn PDF document text
    • http://gofudawaropuz.epizy.com/surah_an_naba_audio.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_off0000dc40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC40 5304 bytes
SHA-256: 799fd9f6c54bc7a710a43f9510f06e8b3b6aae301e4853e5ce2f14d478cc76f0
font_01_sfnt_off0000ee59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE59 11548 bytes
SHA-256: 4dda66b97b829149e84e85517e606d1df9ab8ed97cfa2df9f935bcfb11fb4e05