Malicious PDF — malware analysis report

Static analysis result for SHA-256 6de201d650a2286c…

MALICIOUS

PDF

39.9 KB Created: 2020-10-14 12:58:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: f5ce8055f7cc1e59e6cb42485922d315 SHA-1: 3b74eeea5f6d5123b44e88c692b61e90d899fa55 SHA-256: 6de201d650a2286c323daadc2432019f524ca1f8a9dc75da0013dabe6041c92a
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://gettraff.ru/strik?keyword=liaison+chimique+exercices+corrig%25C3%25A9s+pdf In PDF document text
    • https://site-1038825.mozfiles.com/files/1038825/topexelekesakosojelivuk.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/2a5b38eef3430.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/aa92d.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/7885719.pdfIn PDF document text
    • https://jemiwuwavaza.weebly.com/uploads/1/3/0/8/130814288/bibesekukemugedovofa.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/1696278.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/b2b2176b-6c5a-4f1b-b57c-90c33804c2ff/26759860581.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f288a248-a6ae-4c46-aed1-2819272c2454/fepotuse.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1853a33d-7b7a-43bb-82e7-7775be2d937e/73605401654.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0b18fde9-4ddb-4c95-85e8-00c2d0b22051/gedevulesag.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b466fa91-62e0-4796-8928-ad44858cbf2d/54341072658.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_off00005921.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5921 5812 bytes
SHA-256: 375f236de7cd0c38f30167dea76933b81b85d3c25543c00ffc925777a640c2cf
font_01_sfnt_off00006c77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C77 11296 bytes
SHA-256: d0bb362e142ab780e2d0be05c3435191f374686ecd0261eda04709075634727a