Malicious PDF — malware analysis report

Static analysis result for SHA-256 c87a1613979a5b6b…

MALICIOUS

PDF

68.6 KB Created: 2021-02-08 15:47:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 08098716c6c3b49a1e59e5f4873157c1 SHA-1: 9515e84652ba6a891052416d51a63361eb9d15bf SHA-256: c87a1613979a5b6ba9c5f4374b8d8562f9ea4637e3be407ca24e08dca2071782
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://jacksth.ru/wb?keyword=adidas%20logo%20wallpapers PDF link annotation
    • http://goproonly.com/mission_python_download1o97x.pdfIn PDF document text
    • https://cdn.sqhk.co/mifopanikil/Gid7a4r/wifusaninoma.pdfIn PDF document text
    • http://bitsracing.net/hdd_regenerator_torrentjf1je.pdfIn PDF document text
    • http://weareanonymous.org/xenoblade_chronicles_x_guide77xc7.pdfIn PDF document text
    • http://omynutural.space/inside_out_theme_song_piano_sheet_music62rxl.pdfIn PDF document text
    • http://yarrebitteh.online/874181967618vjaj.pdfIn PDF document text
    • https://cdn.sqhk.co/nadipozow/g3hfibz/acrylic_nail_designs_coffin_short.pdfIn PDF document text
    • https://cdn.sqhk.co/butituguxur/QgjehaZ/excursiones_cruceros_mediterraneo_opiniones.pdfIn PDF document text
    • https://kepubaxolawava.weebly.com/uploads/1/3/4/7/134703856/6636437.pdfIn PDF document text
    • https://cdn.sqhk.co/wuzexesetaba/3AjdwHi/real_fishing_ace_fishing_hook_game_cheats.pdfIn PDF document text
    • http://lianhua.life/fafujizejatewelupxgx91.pdfIn PDF document text
    • https://fanizoliboligom.weebly.com/uploads/1/3/1/0/131070566/lowalikerav.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zesotat/roweguwikesiwebid.pdfIn PDF document text
    • https://s3.amazonaws.com/dudigonifu/3935060694.pdfIn PDF document text
    • http://zidumive.rf.gd/zitaderumilu.pdfIn PDF document text
    • http://bumerezuwo.epizy.com/mabevipijumame.pdfIn PDF document text
    • https://s3.amazonaws.com/firudegix/violin_notes_for_malayalam_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/wexoteluwag/saucony_guide_iso_2_womens_7._5.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_off0000cfe5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFE5 5208 bytes
SHA-256: b9ddc90149880b76fec3af652ac4ae9bc201bb0299c043704b7f271414148a43
font_01_sfnt_off0000e1ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1BA 10516 bytes
SHA-256: b77a26737bb981d205b04e0cfdbcff5492d8a7f25585b6fa43e7dda64636e9fe

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