Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a9cb0fc9c602fc9…

MALICIOUS

PDF

43.4 KB Created: 2020-11-06 10:45:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 90815d48f0c363fb3a8ca47b463a4592 SHA-1: 76c1207769acff62bf62e9262067bc3bb042d6a0 SHA-256: 6a9cb0fc9c602fc914871ca9fbf8e8500edafd2d0a029a368cbd4b1916e99182
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://traffking.ru/123?keyword=scrolls+of+wonder In PDF document text
    • https://mefemanodi.weebly.com/uploads/1/3/1/4/131454269/tarewulemiretuze.pdfIn PDF document text
    • https://nalabusapigo.weebly.com/uploads/1/3/2/7/132740218/6062153.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371800/normal_5f8b8f34f2745.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/leguvefu/zifazilodanawuxuze.pdfIn PDF document text
    • https://s3.amazonaws.com/penefelomiju/waiting_for_godot_summary.pdfIn PDF document text
    • https://s3.amazonaws.com/pirosisob/bixulurojusosiguferomuxi.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/waviwa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/834df31c-675b-4459-b2ce-c54a0005d19b/69065526131.pdfIn PDF document text
    • https://s3.amazonaws.com/gogonof/rexurelawuxelikarupeji.pdfIn PDF document text
    • https://s3.amazonaws.com/rekawexuretowo/96470228985.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5880ae2-5490-4b3d-afbe-64cf4fcd7a3b/6041434180.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_off00006aa7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AA7 5000 bytes
SHA-256: 1980889a2f65351a3e2a351b5fff89101e0f93e6b7ee15192300b29943e71b60
font_01_sfnt_off00007bcd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BCD 10980 bytes
SHA-256: 14877b68d3591aa0caa4cc7acdff0c4fd8dace48638b64372c3d5758336fb055

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