Malicious PDF — malware analysis report

Static analysis result for SHA-256 64e2ec6921c6bbea…

MALICIOUS

PDF

65.3 KB Created: 2021-02-25 15:20:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: d135872b320dce7c0a8e1fa87f429259 SHA-1: f427316b80bc20f67643edeedc55203ec3d79e73 SHA-256: 64e2ec6921c6bbeaf9f6a697d06f79d47708ec76ebc262903dcf134a715b98b8
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://bologen.ru/wix?keyword=skills+worksheet+science+skills+slope+of+a+line+answer+key PDF link annotation
    • https://cdn.sqhk.co/kimefutif/fjezIsD/50397493022.pdfIn PDF document text
    • https://cdn.sqhk.co/xekejegixawo/heic5lv/check_cash_app_card_balance_number.pdfIn PDF document text
    • http://eagleaff.com/fundamentals_of_investing_13th_edition_freeyvwsx.pdfIn PDF document text
    • https://cdn.sqhk.co/rigizisojix/ifZ2VVO/dymo_colorpop_label_maker_refill.pdfIn PDF document text
    • http://fastdonwload.space/5687260533154oex.pdfIn PDF document text
    • http://tublitalia.space/plugin_pvr_iptv_simple_client_download49hs9.pdfIn PDF document text
    • http://jumpfs.space/general_ledger_template_for_numberswq0yf.pdfIn PDF document text
    • https://cdn.sqhk.co/zezinojox/jbJvxdr/free_movies_on_youtube_2020_english.pdfIn PDF document text
    • https://litizabege.weebly.com/uploads/1/3/4/7/134713043/janepizilezif.pdfIn PDF document text
    • https://cdn.sqhk.co/fixuzigetir/ehfhiij/tumblr_pastel_yellow_aesthetic_wallpaper.pdfIn PDF document text
    • http://lenudes.com/mtb_step_3cnba1.pdfIn PDF document text
    • https://cdn.sqhk.co/toxinize/gWcJdhi/alien_zone_plus_mod_apk_rexdl.pdfIn PDF document text
    • http://uspex22.online/3541783174weqfh.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/memexelu/best_bathroom_fan_heater_light_combo.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_off0000c2ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2AD 5464 bytes
SHA-256: 4658d6c409aaef9177c7200cb24e5a8ff198198f8812cbca724301dfe0db7d69
font_01_sfnt_off0000d55c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD55C 10060 bytes
SHA-256: fef323139811483359f4e179768469507890215852a1e332a90cfcb323bdf031