Malicious PDF — malware analysis report

Static analysis result for SHA-256 dbbca7011e930fb4…

MALICIOUS

PDF

73.0 KB Created: 2021-03-05 05:18:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: c2ba866e4670e46b9382860a42f221f3 SHA-1: 39ebdc0a951e60ca6bfc4439677a54f531ad5787 SHA-256: dbbca7011e930fb406ca1b36cb0b550ac8a0cc447dc49845f597ec70be9298d5
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://dugedepap.ru/award?keyword=volume+of+polygonal+prism+worksheet+answers PDF link annotation
    • https://cdn.sqhk.co/rizijuwet/jjjhFig/whack_your_boss_unblocked_games_76.pdfIn PDF document text
    • https://cdn.sqhk.co/felatadag/h3Lc3CI/rogue_buddies_2_mod.pdfIn PDF document text
    • https://cdn.sqhk.co/reriwoduriju/gmLylyX/pimonatewifosonadojuwu.pdfIn PDF document text
    • https://wekisakalew.weebly.com/uploads/1/3/4/6/134617168/nunorulom_sijamawuzusatub_xapumovupi.pdfIn PDF document text
    • https://cdn.sqhk.co/mofijovelu/iajiG97/super_mario_world_map_all_96_levels.pdfIn PDF document text
    • http://hookup753.fun/why_is_my_fridge_not_cool61ol3.pdfIn PDF document text
    • https://cdn.sqhk.co/wevexifimur/ddegiid/mashup_songs_whatsapp_status_download.pdfIn PDF document text
    • https://zofoxutugutijor.weebly.com/uploads/1/3/0/8/130874595/golosevuma-nosovolig.pdfIn PDF document text
    • https://lalidusuferub.weebly.com/uploads/1/3/4/4/134440540/muwinukipagi_semejixivetojo.pdfIn PDF document text
    • https://cdn.sqhk.co/lukapokobejo/fic1qVc/31713775752.pdfIn PDF document text
    • http://ipoteka.net/fresh_air_ecoquest_filter_cleaningyn2q8.pdfIn PDF document text
    • https://cdn.sqhk.co/raserijene/hhehhhe/run_royale_3d_apk_download.pdfIn PDF document text
    • http://lofitner.buzz/bush_and_gerts_baby_grand_piano_valuemrucg.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://0cfe495c-9a5f-46a1-a5f3-fb21b6211bac.filesusr.com/ugd/7aabb2_d31d571261314ef69adf8050fff70536.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/7198a8d7-9033-45a2-903e-08884910caab/the_killing_joke_that_made_batman_laugh.pdfIn PDF document text
    • https://f039f7e9-c7fa-441d-bf3d-2f0e35d6be10.filesusr.com/ugd/80685d_d46e0df22e22477f9a3483291221f491.pdf?index=trueIn PDF document text
    • https://73a1781f-5c9f-4c76-8a11-a8e8c44f336a.filesusr.com/ugd/d9f7b5_5ca5489ffccd47e992c52f84f679c9f3.pdf?index=trueIn PDF document text
    • https://c788b29d-df2d-4d46-9946-349e8cce89b7.filesusr.com/ugd/a9e086_42294547d9f646369063e47e3d3ea72b.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/8678d070-84e8-484f-885f-b30c6a2568fb/magoxajejijujo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fcb8c175-5707-484e-9da9-1a780a221ffa/how_to_upgrade_zoom_account_for_free.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_off0000df9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF9C 5540 bytes
SHA-256: e5c3c17491ebd69a543e020e7c084e3442778f3ef3653fc21dbbb641636377fe
font_01_sfnt_off0000f26a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF26A 10612 bytes
SHA-256: 79c1ee971dbcfb8e63d9fcfc8e9122cb904b0b0a1709c185e5d463a85805517b

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