Malicious PDF — malware analysis report

Static analysis result for SHA-256 545b659c58b18ea7…

MALICIOUS

PDF

70.5 KB Created: 2021-03-05 10:23:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 706bf677d7d00acdf5eeffb25198c814 SHA-1: 315a2fe8e824c6c6681c0b11383ecad56cf5caba SHA-256: 545b659c58b18ea7e56bcd6bf55a29e79229e2924fb815129e8e23263960d968
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wix?keyword=snow+sports+merit+badge+workbook+answers In PDF document text
    • http://dektesheff.xyz/jspdf_html2canvas_blurryhpgyl.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417527/normal_6023b150e880e.pdfIn PDF document text
    • http://premiumpornclips.com/temitodiwowelirunekk4yd6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405185/normal_60226bb10942a.pdfIn PDF document text
    • http://com-copyrighit.com/operaciones_combinadas_con_numeros_decimales_1_eso_con_solucionesao641.pdfIn PDF document text
    • http://lnstgramhelpcopyright.com/judivisuninarojaw7veex.pdfIn PDF document text
    • http://timecodes.net/88700250409q2olx.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369333/normal_602b5b97a93af.pdfIn PDF document text
    • http://usersonlineguardingsettings.site/916238320798awlh.pdfIn PDF document text
    • http://figedizizexi.22web.org/bases_and_acids_worksheet.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/91ea3627-cbdb-41c4-b741-36cc4686b8b4/bixele.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/02da4803-b82a-4c5e-a76d-67e11286ddf4/programming_comcast_remote_for_tcl_tv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ece14ae4-e1d8-40ac-8748-b86d3693cf7b/24325931118.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0fc6a1e2-bf78-4672-b30e-68a2c2d8b573/structures_why_things_dont_fall_down_epub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bde2bbe0-2474-4b0e-9bf9-798861db401c/can_you_keep_a_secret_barbie_movie.pdfIn PDF document text
    • http://wasamatebupo.rf.gd/the_way_of_kings_audiobook_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/54e075bf-dc45-4cea-b518-f8b720dd8c93/craftsman_chainsaw_reviews_16.pdfIn PDF document text
    • http://jofesowevelen.epizy.com/graphene_nanosheet_carbon_nanotube_polyaniline_composite.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/82d038ed-63a5-4588-82e1-0a0868eea861/how_to_solve_completing_the_square_with_fractions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ceb6a2ea-7591-4838-9518-fb7948693a69/the_12th_planet_review.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_off0000d798.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD798 5648 bytes
SHA-256: 39ae71fd18d1dac29dc21f5436c60ed12e8abb4164ab6f80010f94af9857e9c7
font_01_sfnt_off0000eac4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAC4 9912 bytes
SHA-256: 14da8568af23ebfeb223141e8e972c9f532e08bb2f754bb65c3ce1c908d12412

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