Malicious PDF — malware analysis report

Static analysis result for SHA-256 f475ef3c46a75a5d…

MALICIOUS

PDF

68.4 KB Created: 2021-02-25 10:06:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 41eb4e170f8debd9f1ccdc92ed934e6d SHA-1: 7bd68315aa444e872a77b76f645ff467e7fe750d SHA-256: f475ef3c46a75a5daac4c5ae922fdde8bdf8d768e590bfce50dba9fc5b802073
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://leonvi.ru/award?keyword=jamie+oliver+vegetarian+recipes+amazon PDF link annotation
    • https://cdn.sqhk.co/lagidexetin/ggihahi/draw_io_github_installer.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480591/normal_600e0e505f1b1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450249/normal_5fd7b1a63a5e9.pdfIn PDF document text
    • https://cdn.sqhk.co/xokebuzizo/rjdjihh/ximaruzor.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427795/normal_5fda257b69d54.pdfIn PDF document text
    • http://pedumerik.sportsontheweb.net/25888834337.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414174/normal_5feeb1c67f653.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445735/normal_600afd1b180c7.pdfIn PDF document text
    • https://cdn.sqhk.co/bomumuxa/iTijgeR/baby_rapunzel_doll_target.pdfIn PDF document text
    • https://cdn.sqhk.co/medugagoviji/gdhcmCS/25377231060.pdfIn PDF document text
    • https://cdn.sqhk.co/pigalixow/QjcieSq/car_drawing_game.pdfIn PDF document text
    • https://cdn.sqhk.co/wazofovam/haifgjt/california_gold_rush_miners_names.pdfIn PDF document text
    • http://tepugorotewole.medianewsonline.com/how_to_lose_weight_fast_with_indian_diet.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/ziwuvijevo/audio_video_cutter_and_joiner_apps.pdfIn PDF document text
    • http://bumurulepowele.myartsonline.com/advanced_cfop_method_download.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_off0000cea5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEA5 5352 bytes
SHA-256: d57f2412ddbe26e38497a0d545a95647f1d5290ebe3671bf747fad0893400a3d
font_01_sfnt_off0000e0d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0D7 10396 bytes
SHA-256: 4cffdc5da46e04ab95bdf80f804215c5e4fd528da7239886c1ae2dcef23b1f23