Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd890e1816a69128…

MALICIOUS

PDF

70.0 KB Created: 2021-02-16 17:20:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 3abae3d805529fdb7207a4ab55d11dc8 SHA-1: 3196932ab2c2d52c60d6cfb312332a9544c7af9c SHA-256: cd890e1816a691281305e3bf4c423bfc2056aa77ed4c9f762ae1290436ca776c
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://leonvi.ru/wix?keyword=carpenter+cup+2019+mercer+county PDF link annotation
    • http://constructionhouse.info/59280286808hktib.pdfIn PDF document text
    • https://cdn.sqhk.co/bebomopakax/jiQjfB6/spy_mission_games_online_free.pdfIn PDF document text
    • https://cdn.sqhk.co/bikegola/XhguhaI/photo_collage_app_android_source_code.pdfIn PDF document text
    • https://cdn.sqhk.co/gizukakom/bjf0KJ2/tivipiwativigedadatomo.pdfIn PDF document text
    • https://cdn.sqhk.co/tosobulig/qg9hfhi/amazon_seller_central_canada.pdfIn PDF document text
    • http://lnstagramverifiedbadgeservice.com/1847427541mlpb8.pdfIn PDF document text
    • https://cdn.sqhk.co/verexumifo/g6UgiQm/war_table_dragon_age_inquisition_hinterlands.pdfIn PDF document text
    • http://nuveclovet.xyz/penobuxozozovakawuw7a5p.pdfIn PDF document text
    • http://daating19.site/kijanixiwogizedizwxphg.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418764/normal_6018abb2e607e.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/zizene/accelerometer_sensor_android_data.pdfIn PDF document text
    • https://s3.amazonaws.com/ziwuvijevo/nonlinear_acoustics.pdfIn PDF document text
    • https://s3.amazonaws.com/fotepopunaj/72584483779.pdfIn PDF document text
    • https://s3.amazonaws.com/jemazejodep/free_icons_for_android_applications.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_off0000d56d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD56D 5356 bytes
SHA-256: b663babffad805d1d8b345aff2d593a71704fd5a514777dce8080e8b9401004b
font_01_sfnt_off0000e798.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE798 10540 bytes
SHA-256: 0f77c8ded9392c4d6b82c952ef9585b760f63a7292365fe7ab4e79be3b65d585