Malicious PDF — malware analysis report

Static analysis result for SHA-256 f34522cf1b0b2768…

MALICIOUS

PDF

72.3 KB Created: 2021-03-14 12:06:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 292a0f4faf6ea73210387362a418a7e2 SHA-1: dc17dc637b46eacbf6285e24726cb076b053f91e SHA-256: f34522cf1b0b27682d79eec6658639cad67045eb845de7c881114d2afc550dcb
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://jottigo.ru/award?keyword=almanac+sarawak+2020+pdf+download PDF link annotation
    • http://zakewabo.scienceontheweb.net/verbos_irregulares_en_ingles_en_pasado_simple_y_participio.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4530990/normal_6023f91697aca.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458628/normal_6046594eb930c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481662/normal_6026b79d2efcc.pdfIn PDF document text
    • http://vumajufeboxidik.mywebcommunity.org/nikon_dx_lenses_55-200mm.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413966/normal_603b1411eaa3e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366627/normal_5ff8c1e8be72f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384831/normal_5ffc352065850.pdfIn PDF document text
    • http://pexawegowe.mywebcommunity.org/biozone_ib_biology_second_edition_answers.pdfIn PDF document text
    • http://lajodibibodi.getenjoyment.net/which_cordless_shark_vacuum_is_best.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417408/normal_6047f679dbde7.pdfIn PDF document text
    • http://tetoxukipim.getenjoyment.net/15312389588.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484618/normal_602a82c865062.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374175/normal_5fede8ae26d30.pdfIn PDF document text
    • http://xijulefabogi.getenjoyment.net/pdf_editor_free_online_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369904/normal_5fc828dd8f229.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://356bbf58-84af-4bff-99a9-d03346e46411.filesusr.com/ugd/b5472a_a9733e34c4104ee9896655baab6e04ed.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zunaduxa/43150647485.pdfIn PDF document text
    • https://44879a12-c10a-431c-a98a-7de142752d0f.filesusr.com/ugd/bb4607_0c5f6c47d0a14b58bcb0d7b48a3ce4bb.pdf?index=trueIn PDF document text
    • https://09235f31-469a-4613-94fc-36d04c1f642a.filesusr.com/ugd/8b6407_565ede5fc9cf49e894bd1aab01564fc9.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wemofodi/beholder_2_android_4pda.pdfIn PDF document text
    • http://fijorolur.myartsonline.com/how_to_find_answers_on_quizlet_faster_on_iphone.pdfIn PDF document text
    • https://s3.amazonaws.com/lixasifasi/firehawk_fx_pedal_calibration.pdfIn PDF document text
    • https://711a90e7-97f2-4eab-8690-3003ec1e9b64.filesusr.com/ugd/a0905b_e05af6adfdb8452ebcff44fb313bd676.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_off0000de20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE20 5720 bytes
SHA-256: 01d7b26c0c84f4b445756e71903a93c462b16b156b6b9166e2f553fefd7d6915
font_01_sfnt_off0000f195.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF195 9888 bytes
SHA-256: 0965020fdc9a76005a1dae4ee895299d5350fbc5ede92aa5d7b123c03b8b3514

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