Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6b6dab9729c01ab…

MALICIOUS

PDF

72.0 KB Created: 2021-02-14 17:52:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: c08f99e7d5700e3e38989fee9e323b9d SHA-1: 0a9d22cbb4bea71a264f1216b60cc33d7e1031e5 SHA-256: d6b6dab9729c01ab71009b9192b22f569e08eb98a34f8e17f73c08f72b50697f
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://jacksth.ru/wix?keyword=hublaa+liker+instagram+apk PDF link annotation
    • http://difodalutovirub.iblogger.org/upsc_exam_details_in_tamil.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369152/normal_6007fece2c261.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384461/normal_5fd9f4af7cc90.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/zatazewoz/34909966782.pdfIn PDF document text
    • https://s3.amazonaws.com/dozuga/aadhar_without_otp_and_totp.pdfIn PDF document text
    • https://s3.amazonaws.com/pajeriramal/58054694881.pdfIn PDF document text
    • https://s3.amazonaws.com/gotitibekovi/twinings_cold_water_infusions_nutritional_information.pdfIn PDF document text
    • https://s3.amazonaws.com/lorugipopuxe/75032282107.pdfIn PDF document text
    • https://s3.amazonaws.com/rodakarugupoko/19876688806.pdfIn PDF document text
    • https://s3.amazonaws.com/bokofapig/gynecologic_oncology_reports_pubmed.pdfIn PDF document text
    • http://daxepusiz.rf.gd/hd_wallpapers_1080p_for_android_phone_nature.pdfIn PDF document text
    • https://s3.amazonaws.com/kukazowox/fujoba.pdfIn PDF document text
    • http://wofajigu.rf.gd/23109337347.pdfIn PDF document text
    • https://s3.amazonaws.com/faluzotixupi/welding_blueprint_reading_worksheets.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_off0000dea3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEA3 5304 bytes
SHA-256: 5174866aef8fcf1a9b191a9e2058f4d1474b447a4895053582a63058db5bcb04
font_01_sfnt_off0000f096.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF096 10184 bytes
SHA-256: 6cc4a9da5e276ea645db63a515fa790a60080ba0c4ddcadc5ee5e6c84c0f5b2e