Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0a8d09c730125eb…

MALICIOUS

PDF

45.3 KB Created: 2020-10-03 03:12:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 505f5ede3832b8e8d8fa5fb4329149d6 SHA-1: 814073ac7f5c3f53a446a797c5827c949fdcf9b4 SHA-256: e0a8d09c730125eb78b8e10ff53acd45bb1e8c03cd8768f9646850e4c53a0e4e
124 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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=short+run+market+supply+curve In PDF document text
    • https://site-1038601.mozfiles.com/files/1038601/rilewowekogobir.pdfIn PDF document text
    • https://site-1036696.mozfiles.com/files/1036696/81950959933.pdfIn PDF document text
    • https://site-1040398.mozfiles.com/files/1040398/dirukuwo.pdfIn PDF document text
    • https://site-1036997.mozfiles.com/files/1036997/6817152275.pdfIn PDF document text
    • http://files.bravechoicesmn.com/uploads/1/3/2/7/132740692/3102480.pdfIn PDF document text
    • http://sijezibe.bucksnortranch.org/uploads/1/3/1/4/131438783/dofitonoza.pdfIn PDF document text
    • http://files.lifetabernaclesc.com/uploads/1/3/0/8/130814124/daliseki-ritimufak.pdfIn PDF document text
    • http://nunawo.jennyandgusfood.com/uploads/1/3/1/0/131069869/9098539.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0499/4973/7115/files/how_to_determine_hybridization_orbitals.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7112/7208/files/pro-pectalin_gel_for_dogs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8546/3713/files/78873643192.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6826/7423/files/apk_editor_pro_apk_download_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c6d31f4-6616-44a5-bf38-5b9b28a0bad7/7548334374.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006747.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6747 5336 bytes
SHA-256: c6c616277a88df1cf5c7e0124fbaaec808831d5ffcdb813b668f82f4c3501b71
font_01_sfnt_off00007943.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7943 9720 bytes
SHA-256: b0a0a799aec7ff735b6f641e63aa511bb9af2d80ad9af568e36ddbf7e71485f9
font_02_sfnt_off00009a83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A83 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f