Malicious PDF — malware analysis report

Static analysis result for SHA-256 c62023497f29efc8…

MALICIOUS

PDF

70.7 KB Created: 2021-02-25 00:31:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: b7faa70e863c55405aac68a815bf020c SHA-1: 107ead1ac333358cb70742118122a22d8050711e SHA-256: c62023497f29efc8f79ac50b73492fb9ddde16fde3f3fd445a81fd39247a2247
66 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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/award?keyword=mercury+quicksilver+throttle+control+manual PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4462345/normal_60289ce20d68f.pdfIn PDF document text
    • https://cdn.sqhk.co/mexovaru/8M1VABy/79324433230.pdfIn PDF document text
    • https://cdn.sqhk.co/biwizalibe/iaZhgge/fonorozanodumaritasudav.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496586/normal_5ffbb1c45c735.pdfIn PDF document text
    • https://cdn.sqhk.co/lexewagoz/Q8fI6gc/tiles_hop_game_download_for_pc.pdfIn PDF document text
    • http://wotidoteked.mywebcommunity.org/how_to_install_foxit_reader_printer.pdfIn PDF document text
    • https://cdn.sqhk.co/minamojazi/hfhwiju/mindshare_agency_indonesia.pdfIn PDF document text
    • https://cdn.sqhk.co/xovikojux/gdgi8hg/cisco_webex_meetings_is_using_your_microphone.pdfIn PDF document text
    • http://bumumapa.mypressonline.com/60986856144.pdfIn PDF document text
    • https://cdn.sqhk.co/takularozo/a5gehjR/10857941973.pdfIn PDF document text
    • https://cdn.sqhk.co/miropefaneka/hHV1FB4/doodle_draw_joy_online.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379960/normal_5fdef753135eb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://ropobowex.epizy.com/39487394447.pdfIn PDF document text
    • http://fimuwudefixolet.epizy.com/brother_songs_masstamilan.pdfIn PDF document text
    • http://kevakop.epizy.com/morajiwotefed.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_off0000d78c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD78C 5396 bytes
SHA-256: cf4e3bce2322baa16a4703bdf4357cc610bb66c5ced03e9c77dbe6821d79c13d
font_01_sfnt_off0000e9da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9DA 10460 bytes
SHA-256: 8993bf19b702de3b42328e5edde257f637d5f2514c3060bc8263b263d58bcdc7