Malicious PDF — malware analysis report

Static analysis result for SHA-256 be666660bdfe1f53…

MALICIOUS

PDF

75.5 KB Created: 2021-03-06 07:32:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 2095e3d66de470f61fcf6d6073176b89 SHA-1: eece46a8e09b72b5363d8517d0cd4ed60b16caa1 SHA-256: be666660bdfe1f5378e4b0a3c938dfbb48ca79be25ade5a1c967b21de2426718
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://resalured.ru/wb?keyword=gfta-2%20scoring%20manual%20online PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4390642/normal_5fedfd85501d1.pdfIn PDF document text
    • https://cdn.sqhk.co/xexisini/8ihBgjs/61335609906.pdfIn PDF document text
    • http://arthromedshop.xyz/kegofasupexox4xg.pdfIn PDF document text
    • http://fupefabesosada.mygamesonline.org/11218959787.pdfIn PDF document text
    • http://busforpay.online/subtenant_contract_templatej4edl.pdfIn PDF document text
    • http://mevesepegubisis.scienceontheweb.net/fezujewis.pdfIn PDF document text
    • https://cdn.sqhk.co/subetudagoli/WZngijf/how_to_iron_polyester_suit_pants.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454550/normal_6010d4579fdc4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487888/normal_5fccc3a479a15.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/fenatagazise/anthropometric_measurements_of_newborn.pdfIn PDF document text
    • https://s3.amazonaws.com/fulazelof/chrome_offline_installer_73.pdfIn PDF document text
    • http://vezifapix.epizy.com/chemistry_density_calculations_worksheet_answers.pdfIn PDF document text
    • http://kexeban.rf.gd/mafosapugodumamasal.pdfIn PDF document text
    • http://kugaxupupoguj.rf.gd/why_wont_my_dell_pen_work.pdfIn PDF document text
    • http://zesafemumibow.myartsonline.com/d-link_dir-655_firmware_upload_failed.pdfIn PDF document text
    • https://s3.amazonaws.com/rakabexozu/zogaxuve.pdfIn PDF document text
    • https://s3.amazonaws.com/nowokil/gesirudema.pdfIn PDF document text
    • https://s3.amazonaws.com/tezude/xumofetom.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_off0000e87f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE87F 5396 bytes
SHA-256: 003ae23cfb4ebb105c5f116075d221c819fa15747c609b03053e64e6f18769db
font_01_sfnt_off0000fad4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAD4 10848 bytes
SHA-256: 4c179f913c27c7fda0f9fd6dc32f0462ee96070f1b2e5f330b361a2a31bb586f