Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf5f89049bdd78ad…

MALICIOUS

PDF

50.0 KB Created: 2020-10-03 04:30:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: abfb93d703f4eb1c9201b2744e0c6dbe SHA-1: 570c524045007e6504667bf1e43d7c33b5a387aa SHA-256: bf5f89049bdd78ad35897ad04b7f6b5ee8379881003169d245aa4a7a8908d4cb
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/pify?keyword=christmas+projection+lights+amazon In PDF document text
    • http://files.kallers-studio.com/uploads/1/3/0/8/130813782/5932760.pdfIn PDF document text
    • http://files.davidmaycock.com/uploads/1/3/0/7/130739802/kovajamov_kivenefajubami_tutaveropexez_vuzilaxuraxuja.pdfIn PDF document text
    • http://xubikutuz.fixiology.org/uploads/1/3/1/8/131871390/sorupavetunosek-luluwuxenalori.pdfIn PDF document text
    • http://toladuz.jesstheticsskincare.com/uploads/1/3/0/8/130814328/timawijinifew_risuv_mufuluzoj.pdfIn PDF document text
    • http://files.gerardatkinson.com/uploads/1/3/1/4/131438860/jedowisikopin.pdfIn PDF document text
    • https://site-1038969.mozfiles.com/files/1038969/kilaxokolegarelojeken.pdfIn PDF document text
    • https://site-1039649.mozfiles.com/files/1039649/dosovexizonomutilabirujaz.pdfIn PDF document text
    • https://site-1039676.mozfiles.com/files/1039676/57227081630.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/1/0433/9128/7452/files/measuring_worksheet_3_answer_key.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6623abe0-2e62-4907-8631-cca1e71bd387/wupozudivowedoliwoj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6813cd36-106f-407f-a005-0549d5a4f370/pifasorepuga.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_off0000858a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x858A 5380 bytes
SHA-256: 32c592b49541734d81b30371843a98788453712ef9375cb39830b1326124e0ae
font_01_sfnt_off000097b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x97B0 10284 bytes
SHA-256: 40cae684131c8b3f0b380ab4ba74a5fac0a5101815354e8c23fb23c3b93a3fa0