Malicious PDF — malware analysis report

Static analysis result for SHA-256 deab72ab436df90e…

MALICIOUS

PDF

49.9 KB Created: 2020-10-26 20:05:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: b3ec436986c68dac7da40b13886cf564 SHA-1: de2b96fa6ed364a3f1e4f0b929312ff6752c9a36 SHA-256: deab72ab436df90efb7a690064d09aecfea27cbea21c62dd8fdde38b79dceb99
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://ttraff.me/123?keyword=the+one+world+schoolhouse+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369631/normal_5f88aefae1d62.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371808/normal_5f8b1d51997c2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392220/normal_5f8eef8538732.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376601/normal_5f90469f29caf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369324/normal_5f8bd61d11932.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385235/normal_5f91ca9c696c5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402944/normal_5f91ced778493.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382643/normal_5f8eae2c0ce3c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404285/normal_5f95b4eed72d8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367648/normal_5f95e5cad09b5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366646/normal_5f8f350041e61.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409819/normal_5f966f324df60.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366661/normal_5f873094a03a2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368999/normal_5f9264e38214e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384639/normal_5f8cbaf2cc6e5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366304/normal_5f88bc4036bc5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373516/normal_5f8c15f752d4a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378843/normal_5f923b06d0c4c.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/a42eba34-d3b4-491f-8387-9e21ded2aacc/83142236809.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/41ff060b-b167-424a-b34e-db94679c269c/woruf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e2cb15e-2969-4982-b1ed-b8e74b083bc5/stronghold_games_website.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3eeb6068-0f5c-48d2-918c-c1dc14681569/rowejiwaxiroxosugej.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a29db4a-5600-4a51-96fd-bfe45ee37376/kusivabawigobiwebare.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/912bfb73-941b-425e-9ba5-3f6748e3695c/13511880024.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ed0dfc3-9349-4fd8-8103-84e78a49ee2f/wawepusotisopaj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ecd713bf-8371-4d5b-9a5b-31328713b48f/teduwujalef.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_off000083f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83F3 5072 bytes
SHA-256: 1c9c1be6ca91281a8b32af2341859826cb800509de8a8edc33e6def4096d0929
font_01_sfnt_off00009540.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9540 10768 bytes
SHA-256: 80879090e54ba4da9ee4f7a2eab64038e6a0c29c1b498630a6cb4f9f4ecd9563

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