Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d318466be082adb…

MALICIOUS

PDF

41.5 KB Created: 2020-10-17 11:34:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 898b1c46c9539fd944b4013614019abf SHA-1: bd3f6472dd6c8c57d5709758c3efe258b0a96b4c SHA-256: 9d318466be082adbc4782b74e7a9a6c173c229ab80fdfa3b986241e4f736f161
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://ttraff.ru/123?keyword=shapes+of+molecules+and+bond+angles+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4373987/normal_5f891b521cf6c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365656/normal_5f892e14d17a7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367313/normal_5f8749b40e72b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366321/normal_5f8804cac11aa.pdfIn PDF document text
    • https://mojivimimujovo.weebly.com/uploads/1/3/0/8/130874437/tolujimifiv.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/zanazanekoxel.pdfIn PDF document text
    • https://topodomero.weebly.com/uploads/1/3/2/6/132696018/vupineso_kadawebapibi_sodovejukol_dafiriru.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368243/normal_5f87ac32d3e81.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365584/normal_5f8707d537005.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/81a16f4e-c3ab-4f0c-951f-17a25489c4d3/jigisufozedozuze.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ea7eb63-7d77-4de5-a9cd-fd6d124a07ea/lugorasi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c08e43c-9b57-43b3-a947-8ba411801f2b/29346885161.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c4d7d7f-f57b-4a8f-a893-e1b1c46400bb/xeboputenasig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/2335/0939/files/81388187680.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/1705/1553/files/ellen_eccles_theater_parking.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd46e8a6-55fb-4f65-bbb1-99296e94ddd8/jetisoperefepulaz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0b6c9e9f-1404-479c-b860-9995f7aaa8e0/67476367852.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8076fe9-9aee-447a-8bc1-70a71c8ae733/zagumoza.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa2a0dc2-2480-488e-b014-6737caf091c0/16474699366.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa1d2113-7141-4f49-8969-91db456d1849/weworebe.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_off000062a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62A7 5716 bytes
SHA-256: 8706f267f58e35bba79d9ca9db9924bca69c5667eef8d602928f56e03efdbe4e
font_01_sfnt_off000075f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75F3 10248 bytes
SHA-256: ed53a77f332908b96eb9e2bb6943170248de42359d92f8d47b0aba303f720c51

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