Malicious PDF — malware analysis report

Static analysis result for SHA-256 73dd09d0c306830a…

MALICIOUS

PDF

74.5 KB Created: 2021-03-17 00:10:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 04ee6fd55137e8734a3275d731f4b0be SHA-1: 43f9b9b125102e5cba2c4d4fffa3c76eb0050a2e SHA-256: 73dd09d0c306830aa36e2d9e955940a912954bca6e82cfcf5e75d9ab5d944b30
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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
  • 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://baarspo.ru/award?keyword=biopsicologia+john+pinel+pdf+descargar PDF link annotation
    • http://korixoludofuguk.scienceontheweb.net/92443633945.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458827/normal_5fe8eb84bbd96.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366365/normal_5ffcf7a2f38b8.pdfIn PDF document text
    • http://sadipize.scienceontheweb.net/regopazu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383703/normal_600ef7132435f.pdfIn PDF document text
    • http://gamukanemafutu.mywebcommunity.org/what_is_the_origin_of_the_word_communication.pdfIn PDF document text
    • http://potuduwatolebu.mywebcommunity.org/english_abbreviation_dictionary.pdfIn PDF document text
    • http://bebetadiruj.mywebcommunity.org/24615658876.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485012/normal_6022072ac32ff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472479/normal_604e9b84046e8.pdfIn PDF document text
    • http://gelokan.sportsontheweb.net/xipakirexerifasiwolojobev.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bitines.myartsonline.com/the_paper_menagerie_and_other_stories_kindle.pdfIn PDF document text
    • https://b9a4c3d6-4ccf-4d04-9b0f-c2e9c357e15d.filesusr.com/ugd/e5cbe5_7009f95ec5a84d3bae65b7c79e337588.pdf?index=trueIn PDF document text
    • https://adc0bc6f-2b4d-4951-bce0-9128d215fa34.filesusr.com/ugd/5ea4d5_265e2eef26d04ddfb93af9126b0649d8.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/87bf08a0-78ad-4266-81b9-c16f6889576d/how_much_is_an_organ_piano.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/beecbecb-63d3-4213-bd85-f1f641c91cfd/35426680227.pdfIn PDF document text
    • http://fikelamizogu.myartsonline.com/how_to_tune_a_mikuni_carburetor.pdfIn PDF document text
    • https://fccd5518-64e1-462d-9dbe-8d8d8a19ca7a.filesusr.com/ugd/eb005d_5d2e54a449bd4aed8e8f8f2a02ae6a8f.pdf?index=trueIn 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_off0000e11a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE11A 5540 bytes
SHA-256: b1bb1c87db418ec492307ab197c15d2f64837dbcd9bd861694062aa4c3148b58
font_01_sfnt_off0000f3fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3FA 12104 bytes
SHA-256: febe6b40a69c7e2919aec60af22c6de694948d7703624171a183c76efe8283b3

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