Malicious PDF — malware analysis report

Static analysis result for SHA-256 872203d9757eea92…

MALICIOUS

PDF

44.6 KB Created: 2020-10-31 20:16:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: 8cee66f41a1f5fcde2667aaf7e4a9710 SHA-1: ac752e3f92c76beaa62b210e143f49214c433ccc SHA-256: 872203d9757eea9268f1e871f8e653365171ff344ae39288be9a8507b377dfbc
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=idiots+guide+to+football+manager In PDF document text
    • https://sowameneritela.weebly.com/uploads/1/3/0/7/130775755/fawaverilijuku-numamimisive.pdfIn PDF document text
    • https://segawerod.weebly.com/uploads/1/3/4/3/134313685/lanumejar_niwipejiv_kewem_bedowoma.pdfIn PDF document text
    • https://gogiwujuduk.weebly.com/uploads/1/3/4/3/134352159/bufenije.pdfIn PDF document text
    • https://tusefekojeseto.weebly.com/uploads/1/3/4/4/134437698/delixokux.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/67d58103-9b20-40bf-bf2d-142de40f8f31/4243233086.pdfIn PDF document text
    • https://s3.amazonaws.com/nalifij/jinuda.pdfIn PDF document text
    • https://s3.amazonaws.com/bulozor/61815781742.pdfIn PDF document text
    • https://s3.amazonaws.com/mamukawaxatali/military_graphics_and_symbols_powerpoint.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5072b757-c29e-4633-aa2e-7734724ce368/81619133997.pdfIn PDF document text
    • https://s3.amazonaws.com/zurovajij/biblia_catolica_de_jerusalen.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee515277-9e46-46c6-b53e-2749e7720e67/nivuzepuderejiva.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75a621b1-d6ed-4d7b-91a4-e5d415cbe25b/30134766402.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/455d6499-d4ad-4936-8cc1-5a84101cac70/65878163112.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c4d5ed3f-0bab-4078-b7f2-26ce121fa0ee/71341790062.pdfIn PDF document text
    • https://s3.amazonaws.com/xapidajovaji/adivinanzas_dificiles_para_nios.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_off00007050.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7050 5304 bytes
SHA-256: c360bba8ea1e1410a3c8eaec045a432730c4daebe86a911f615151a2537a09af
font_01_sfnt_off00008246.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8246 10764 bytes
SHA-256: 537d0a5f7ad043d37c0f35d3a58573347a0e41ef4351206acdafa1b1649c30c3