Malicious PDF — malware analysis report

Static analysis result for SHA-256 83dc74d4f074c456…

MALICIOUS

PDF

40.9 KB Created: 2020-10-05 14:12:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: c2351145a3ce44d0917d063f846acf9c SHA-1: fe5ffe4dd4b933d2f0345300cd62ac1550aff2ea SHA-256: 83dc74d4f074c4565ac2ae1450f6a8dcaaa91412e78eff983e19ae61d64ef09f
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=manifest+destiny+map+pdf In PDF document text
    • http://files.inspiredonlinesites.com/uploads/1/3/1/8/131856545/f60641d2.pdfIn PDF document text
    • http://files.willisandsonsfuneralhm.com/uploads/1/3/2/6/132681488/6093301.pdfIn PDF document text
    • http://bixitu.easy1upbusiness.net/uploads/1/3/1/6/131606620/zugixalavenoli_bowobuxem_bemulujerokuru.pdfIn PDF document text
    • https://site-1039460.mozfiles.com/files/1039460/58403900686.pdfIn PDF document text
    • https://site-1036725.mozfiles.com/files/1036725/82727963750.pdfIn PDF document text
    • https://site-1042938.mozfiles.com/files/1042938/baxoxita.pdfIn PDF document text
    • https://site-1038310.mozfiles.com/files/1038310/kiloju.pdfIn PDF document text
    • http://mibewe.bakingbeast.com/uploads/1/3/1/0/131070357/53ea060327d2.pdfIn PDF document text
    • http://files.barbershillyouthsoccer.org/uploads/1/3/1/4/131452904/mijaxinidonos.pdfIn PDF document text
    • http://xubax.luxuezheng.com/uploads/1/3/0/7/130739476/b17b5fc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off00006369.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6369 5164 bytes
SHA-256: fc0e3d2d129b6e8002cf86645ed6c70e6e81574caa2e6636efbcd123582253a3
font_01_sfnt_off00007508.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7508 10120 bytes
SHA-256: 0b41db48c4a849fc1f30f5af38430010633e1977107e527c70c00e1c13f0133f