Malicious PDF — malware analysis report

Static analysis result for SHA-256 89178e381c35916e…

MALICIOUS

PDF

51.1 KB Created: 2020-10-18 02:00:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 470ab5d66cf086ff019937194cafa9c2 SHA-1: eb62cd0e75bda69b35c093a47ff0228bf91664fa SHA-256: 89178e381c35916e9deba416ea9d30714d0381e526b7f09d2b4bab6a88ce090a
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://cctraff.ru/strik?keyword=asphalt+xtreme+game+download In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366389/normal_5f872b0eea7f6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371004/normal_5f8a6c8ad9fa4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369149/normal_5f8b5ba78dbee.pdfIn PDF document text
    • https://dojudiwoju.weebly.com/uploads/1/3/1/4/131406456/9609319.pdfIn PDF document text
    • https://mabanopovofed.weebly.com/uploads/1/3/1/4/131453130/povevoravorixifeg.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374857/normal_5f8b5c751f538.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366036/normal_5f8b70ece7df7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365607/normal_5f8b104931f09.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/d1a193ae-28d3-43c3-b8ea-11ab20eed588/xanosopotulesesox.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0996ed3-d214-4cd3-8ca3-b657d376fa0c/48631441730.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/44dcde2c-9f16-4805-a917-a1d86eee067a/4678662777.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6bfaee2b-ad7c-4162-b24d-0c8f0f95070f/88051386440.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4341ce44-2404-4bd6-9707-ed39491d448f/ganunulovuxo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0d4fd76-2b3a-4e08-954c-33ecebd79af6/87638071018.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/41f460ff-3612-40e2-beea-54d6119e86fd/lofonaluwuxapipi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/6180/4693/files/population_density_worksheet_answer_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/1314/7293/files/jenobaxubarogos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/5865/0009/files/display_android_on_apple_tv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/7255/5674/files/tatuajes_en_el_brazo_de_hombres.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_off000088e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88E3 5520 bytes
SHA-256: 5f8b4c2710d23f54b87fa124d4252abc5624002a0d1a3368e0b4cf93549b7f3b
font_01_sfnt_off00009b92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B92 10420 bytes
SHA-256: ae1b1d4ccd0e1f6b84f2d92937298dd990ee2f646625b88d83204e9385df6820

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