Malicious PDF — malware analysis report

Static analysis result for SHA-256 43dbc40f38c60dc4…

MALICIOUS

PDF

69.2 KB Created: 2021-02-27 02:10:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 433d723011dbfca2091cadedbb64ed9d SHA-1: a8060dc10b3fb69933063fc35fee8a7b51ceecf0 SHA-256: 43dbc40f38c60dc42e98ac878e671c38f8f45915d3ebe2e0f9310fe0a368c7f1
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://botokaw.ru/wix?keyword=brevard+county+school+calendar+2020 PDF link annotation
    • https://cdn.sqhk.co/fugovigul/yjcswbr/monkey_wrench_lyrics_eazy_mac.pdfIn PDF document text
    • http://finipupote.mywebcommunity.org/53284582158.pdfIn PDF document text
    • http://jegexovavof.iblogger.org/yamaha_rx-v685_release_date.pdfIn PDF document text
    • https://cdn.sqhk.co/gepeduvo/gWjjie9/dune_trailer_2020_leak.pdfIn PDF document text
    • https://fukidupedogof.weebly.com/uploads/1/3/2/8/132814182/pozosabuvasaw.pdfIn PDF document text
    • https://cdn.sqhk.co/momujolo/igghFmq/neo_geo_pocket_game_cases.pdfIn PDF document text
    • http://lemakomude.sportsontheweb.net/narasimha_karumanchi_data_structures_java.pdfIn PDF document text
    • https://mitesevutij.weebly.com/uploads/1/3/4/7/134717039/3573644.pdfIn PDF document text
    • https://cdn.sqhk.co/lusimalifa/xsghChe/gnuplot_line_color_list.pdfIn PDF document text
    • https://gugukufetufa.weebly.com/uploads/1/3/4/3/134337187/fasasedufu.pdfIn PDF document text
    • https://cdn.sqhk.co/wejawujagi/dhejdeS/deadly_boss_mods_dungeons.pdfIn PDF document text
    • http://metikinave.22web.org/do_marxists_believe_in_capitalism.pdfIn PDF document text
    • http://kikababono.mywebcommunity.org/robakokuxas.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://tovujifemiga.rf.gd/formato_de_mantenimiento_preventivo_de_computadoras.pdfIn PDF document text
    • http://damatagowigiz.epizy.com/21034392044.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c682.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC682 5344 bytes
SHA-256: c42639b279e29d27daaf077dee48d97c283f927f48ce8db9bf980bdee7c102bc
font_01_sfnt_off0000d8a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8A5 9676 bytes
SHA-256: 109f980cf8f70372f7e13fc39b466765802c2109922a826fabc3303dc8ebe4c4
font_02_sfnt_off0000f9a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9A9 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34