Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5ddb798f53b57cc…

MALICIOUS

PDF

42.7 KB Created: 2020-10-18 02:21:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-28
MD5: 362a2ead9119b2e464baa98621c7d155 SHA-1: e28bcda2201bb013a27ccca5e69a3bbb84390f64 SHA-256: c5ddb798f53b57ccde845c5ced4b99151263a83a3ac5df5351e9514f1c3a7f00
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://cctraff.ru/wb?keyword=vba%20excel%202010%20programacion%20en%20excel%20macros%20y%20lenguaje%20vba%20pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366662/normal_5f874fe6d094c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366652/normal_5f87b1770fe54.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375342/normal_5f89e139eaaf8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370054/normal_5f88471ab0a44.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367296/normal_5f8a511034c5d.pdfIn PDF document text
    • https://dirigesibujov.weebly.com/uploads/1/3/0/9/130969991/4078745.pdfIn PDF document text
    • https://vimiwegom.weebly.com/uploads/1/3/0/7/130775837/vilemokoguropebiw.pdfIn PDF document text
    • https://pevugubak.weebly.com/uploads/1/3/2/7/132740457/demaxevijinubalulu.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/1/0501/5443/8846/files/dikisijexoxowox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2324/3176/files/tim_cannon_md.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2044/3045/files/lillebaby_carrier_complete_instructions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/8432/8344/files/rudisawafaxexuxosiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7471/4784/files/kuwewupus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/7612/7394/files/72590149964.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7777/7061/files/prepositions_of_place_test_with_pictures.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7777/7061/files/kandungan_bayam_merah.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/9939/2674/files/crash_fever_tw_mod_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/2386/8319/files/39091156640.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2044/3045/files/skype_apk_download_for_laptop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2479/2224/files/ordenes_de_magnitud_fisica.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d16adf36-fec4-4f4c-8949-e0bde14e8993/pafemeworazav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/41c42488-690d-427e-a6bc-e86427dbbb1c/43380086817.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/598832ce-cb1f-4238-aae6-5eb0d6c85468/doxidaxasamu.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_off00006527.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6527 6212 bytes
SHA-256: 9eb40c452417210bcda3b0df5b5440e63584cdd698c138c26782c034da5a8453
font_01_sfnt_off00007a46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A46 10004 bytes
SHA-256: 073767bdb66b588df6654a9334ad401787a2abc4ced1b233569ca064722bb651