Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc5dbb50f4842a2f…

MALICIOUS

PDF

66.5 KB Created: 2021-02-19 21:02:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 9a9174d45f3eff3db8f4bd7724e6c606 SHA-1: 3b2e3752ce1f9dbbf09dccbd597e90b2b3177459 SHA-256: fc5dbb50f4842a2f252988eb7bf53c0b5480a0f78866733a0b041b5833787976
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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/wix?keyword=mclaren+flint+family+medicine+residency PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4365638/normal_5ffe96e84c502.pdfIn PDF document text
    • https://cdn.sqhk.co/jigavozef/iaihhj1/fun_cake_3d_cake_decorating_games.pdfIn PDF document text
    • https://cdn.sqhk.co/nolagutotato/hhfEZii/selibibudas.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420240/normal_5fdc1b19dc010.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446496/normal_6003ea61170af.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385424/normal_6029defd5192d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501045/normal_601378b3f04f5.pdfIn PDF document text
    • https://cdn.sqhk.co/bexutavukaro/bibPjdL/20310517800.pdfIn PDF document text
    • https://cdn.sqhk.co/notigagamu/je6Pq5P/42459832291.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481994/normal_5fe9017f12a00.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490252/normal_5fef5827ce631.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414678/normal_60134df355e3d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/murudute/fright_night_2_2013_full_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/bubisifapagefe/dota_2_alchemist_guide_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/viregujipowuru/maduzobofezepejegezoxet.pdfIn PDF document text
    • https://s3.amazonaws.com/wenobagupexekap/46213924277.pdfIn PDF document text
    • https://s3.amazonaws.com/tevigotu/webshop_template_blogger.pdfIn PDF document text
    • https://s3.amazonaws.com/xopugup/jidulor.pdfIn PDF document text
    • https://s3.amazonaws.com/rutufokedizon/holt_mcdougal_literature_grade_8_worksheet_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/voxipanovigepiv/12446787783.pdfIn PDF document text
    • https://s3.amazonaws.com/xonobijikivo/if_clause_android_studio.pdfIn PDF document text
    • https://s3.amazonaws.com/vobuturinivi/78143564852.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_off0000c7d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7D3 5272 bytes
SHA-256: da4ba1ee66eac8ea2b96af58dc9eabf4b6a4c30af7440dab46a34a0fdffec57c
font_01_sfnt_off0000d9c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9C3 10228 bytes
SHA-256: 069a7b9239d3f5a05753d49858cbc1cb298d073dd13eddbbd887a05b18e9fd5b

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