Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf3805f843026ac5…

MALICIOUS

PDF

57.3 KB Created: 2020-09-30 15:44:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: b3cb122f73d7d36780b537177639bc40 SHA-1: 7e229cda61616d07519698ded85f279179b8267f SHA-256: cf3805f843026ac548fc3d984b38cfb5b6aa8a550713f6c507c60369e21146fe
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=acute+kidney+injury+treatment+pdf In PDF document text
    • http://lerixo.bryanfletcher.com/uploads/1/3/0/7/130776208/lozewodomefuxupa.pdfIn PDF document text
    • http://files.juliathegraphicdesigner.com/uploads/1/3/1/4/131438539/pokigovu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0458/6605/7881/files/83921614310.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9660/4825/files/johnny_rebel_some_niggers_never_die.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/5128/1315/files/majezepurawuxomepamoto.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/96ce32da-a1f0-4ab3-86e8-02a8bd251fec/28925272463.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c9829f4-5d8b-4792-a7e1-9876bf6b6dd8/dowagafepujez.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a2f2079c-8b54-47f1-8fe2-e5cc4da5603e/25621569613.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ffedffd7-a7b8-4576-a7c6-060274cc993f/47797705376.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b07a2d0e-4a98-4b08-9c4a-283bb682eca5/zagemo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e6c3cd7-8b65-45a9-9a49-c74d0300d1cb/36631679396.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_off0000a34c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA34C 5324 bytes
SHA-256: 67c0e1e84862523716fd9026c4da3a44b3006f78642e7960e47565f1565f397d
font_01_sfnt_off0000b568.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB568 10208 bytes
SHA-256: 69d0dca839834f26425262be56269b52e32baeaba9b254dc719d6b23c4691a1d

Open this report in the interactive analyzer, or submit your own file for analysis.