Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce8f69de10b2886e…

MALICIOUS

PDF

91.3 KB Created: 2021-03-11 12:41:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 7bd742f0f4e362ab58f9859abfc57956 SHA-1: 30257a156a8af021a5718a34cab37d750fa7176a SHA-256: ce8f69de10b2886e9b13aa6ba47bfd910c49b493a3e7e2dea910194f259ff1a4
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://pelibifir.ru/aws?utm_term=how+much+do+top+hedge+fund+managers+make PDF link annotation
    • http://linavaluviriv.getenjoyment.net/future_perfect_continuous_tense_worksheet.pdfIn PDF document text
    • http://famozosivupiwij.sportsontheweb.net/sugafa.pdfIn PDF document text
    • https://fikomepa.weebly.com/uploads/1/3/5/2/135299400/bdf4b71b6ffa133.pdfIn PDF document text
    • https://kilekawu.weebly.com/uploads/1/3/4/8/134857711/cfb0e3.pdfIn PDF document text
    • http://fofolep.mywebcommunity.org/how_do_you_set_up_voicemail_on_cisco_phone.pdfIn PDF document text
    • http://poposiruta.mywebcommunity.org/how_to_install_atem_mini_pro_software_control.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/dakebesuvum/iroko_tv_movie.pdfIn PDF document text
    • http://vejegaba.atwebpages.com/kimujinurijexev.pdfIn PDF document text
    • http://taregedekuxugux.rf.gd/dazizewawizatoluv.pdfIn PDF document text
    • http://vawirir.atwebpages.com/little_black_boy_haircuts_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4fa788c9-137a-4285-9967-12d65ea3f243/sujudix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea12adb9-dff1-4c19-a3de-00beea89e093/xosibarawiregusanoba.pdfIn PDF document text
    • https://s3.amazonaws.com/jenagubadopi/ajax_form_post_example_mvc.pdfIn PDF document text
    • http://gumalema.rf.gd/70840280790.pdfIn PDF document text
    • https://s3.amazonaws.com/pegozegi/26921881346.pdfIn PDF document text
    • http://botujovibal.rf.gd/gw2_auric_basin_vista_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/xufoxorog/boat_trailer_guides_walmart.pdfIn PDF document text
    • https://s3.amazonaws.com/dukavunivifa/97914403312.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_off000125c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x125C7 5656 bytes
SHA-256: bfb5c197b38436acbf3e775cbc51f8052b73ff833d3d3078409e022fc7f8cbf0
font_01_sfnt_off000138ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x138ED 11512 bytes
SHA-256: 86c7ea64dd4ff4be11a1c454bcb761b648a3843f260e9f82cee0ae428d7d9ed2

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