Malicious PDF — malware analysis report

Static analysis result for SHA-256 e046b29da24d4a8f…

MALICIOUS

PDF

37.8 KB Created: 2020-10-04 17:43:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 1f8d7ed26d42b2ebf423f35d265805b7 SHA-1: 641c29f44ce8e4864f10f41c4556c846cedb9f41 SHA-256: e046b29da24d4a8ff71211648737d1415912f384de3c4aa62ad4098f73e2e98e
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=fake+aaa+card In PDF document text
    • https://site-1036975.mozfiles.com/files/1036975/nezamesakopumibatitifowub.pdfIn PDF document text
    • https://site-1039779.mozfiles.com/files/1039779/79521629893.pdfIn PDF document text
    • https://site-1037121.mozfiles.com/files/1037121/zugakegogepomabokef.pdfIn PDF document text
    • https://site-1036932.mozfiles.com/files/1036932/93670543219.pdfIn PDF document text
    • https://site-1036743.mozfiles.com/files/1036743/dalusiwirifudabuki.pdfIn PDF document text
    • https://site-1042879.mozfiles.com/files/1042879/ridedetal.pdfIn PDF document text
    • http://files.riversidetroutfishing.net/uploads/1/3/1/0/131070051/8e75188b31b1ca7.pdfIn PDF document text
    • http://files.padillalawpractice.com/uploads/1/3/0/7/130739274/dafidudimufinuw.pdfIn PDF document text
    • http://foxiba.stjulienphotos.com/uploads/1/3/1/0/131071117/5186519.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/1/0496/0662/3384/files/bible_verse_pray_for_each_other_so_that_you_may_be_healed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0974/4789/files/how_to_write_square_root_symbol_in_matlab.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_off00004b9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B9D 4184 bytes
SHA-256: b7e8c2e4abf3fd5de0c50673905744011a5acaf4de96ad14333504a998284681
font_01_sfnt_off000059d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59D3 10256 bytes
SHA-256: 26c9ab2cfaf70ad5e4bb0d5490f44452db8ccb798ee67aa34b09b1fd76e32778
font_02_sfnt_off00007cdd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CDD 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3