Malicious PDF — malware analysis report

Static analysis result for SHA-256 03eb24a1ce8729d8…

MALICIOUS

PDF

71.7 KB Created: 2021-02-27 10:58:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 237da37771516c7eb9785fc80d3f8e8a SHA-1: 72dfe4416d1abfa519f7f90fe7ecbdc27e38b4ee SHA-256: 03eb24a1ce8729d8908fbe33a0b0d333aae7893a467128c905cba8e222d229b6
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://mezovuduw.ru/award?keyword=sony+sa-ct60bt+soundbar+review PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4453909/normal_5ff181f71f6a1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381978/normal_6010890d190ec.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450336/normal_5fc5d03b7b2c1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423166/normal_5fd9f27c18622.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475000/normal_601b52685cb05.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371543/normal_5fe45f093916e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4527902/normal_5fc9bcc82cd20.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419827/normal_6023b94567025.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412154/normal_601e8307435df.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449616/normal_5fe23454ad9e7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402933/normal_6035f1c146962.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413713/normal_6020958d2032d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366335/normal_5fde216c3153b.pdfIn PDF document text
    • https://cdn.sqhk.co/lakivasulis/jcSjigc/heartstrings_bowling_green_ky_hours.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/lixuzo/hebrew_bible_english_translation_audio.pdfIn PDF document text
    • https://s3.amazonaws.com/gasodamuza/stanley_model_number_bc15bs.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_off0000dbd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBD5 5728 bytes
SHA-256: 87f8987fc34787443f120f68876037b3d6b67dc811812c4a320315f67e9787fd
font_01_sfnt_off0000ef77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF77 10052 bytes
SHA-256: 59b7ead81f1fe187727ffd7e25dbe62c4611460aa8873a89f3db809fb5f6aef2