Malicious PDF — malware analysis report

Static analysis result for SHA-256 969a3e48559ee4a4…

MALICIOUS

PDF

44.0 KB Created: 2020-10-12 12:33:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: fa919d648284fe103bafe6141dd85b2c SHA-1: 53268e49f02163220afcd5b92db14ed650d329d8 SHA-256: 969a3e48559ee4a417e8355303e6db1242e8175202f85f558a759f1f694181c0
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://ttraff.cc/pify?keyword=v%25C3%25A1rkonyi+n%25C3%25A1ndor+az+elveszett+paradicsom+pdf In PDF document text
    • https://site-1039400.mozfiles.com/files/1039400/labimelujabixobuwelulefob.pdfIn PDF document text
    • https://site-1043689.mozfiles.com/files/1043689/6131553988.pdfIn PDF document text
    • https://site-1040131.mozfiles.com/files/1040131/39893549691.pdfIn PDF document text
    • https://site-1036997.mozfiles.com/files/1036997/79161461298.pdfIn PDF document text
    • https://site-1039576.mozfiles.com/files/1039576/90618780876.pdfIn PDF document text
    • https://site-1039421.mozfiles.com/files/1039421/10553447393.pdfIn PDF document text
    • https://site-1037260.mozfiles.com/files/1037260/kojibojameleborege.pdfIn PDF document text
    • https://site-1043134.mozfiles.com/files/1043134/zumoxovewa.pdfIn PDF document text
    • https://site-1039669.mozfiles.com/files/1039669/farexufuvugetati.pdfIn PDF document text
    • https://site-1036816.mozfiles.com/files/1036816/78607950372.pdfIn PDF document text
    • https://site-1036760.mozfiles.com/files/1036760/56688667765.pdfIn PDF document text
    • https://site-1043646.mozfiles.com/files/1043646/viposefirelujif.pdfIn PDF document text
    • http://vidajag.richardwilliamsvideos.com/uploads/1/3/0/8/130874211/tupapeme_gogemololoxot_velitodutawo.pdfIn PDF document text
    • http://files.mindovermatterbooks.com/uploads/1/3/2/7/132740458/7407037.pdfIn PDF document text
    • http://joxubemo.civicleagueforncc.org/uploads/1/3/1/1/131164174/remazupezibiv_sagizujopiwozuk_jumozopuwuxud.pdfIn PDF document text
    • http://files.bchsband.org/uploads/1/3/1/3/131379552/pirenakiga_wuwede.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_off000067e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67E1 5776 bytes
SHA-256: 218cb4fb4063e429695ec5e52b1844d909a69448ecd04680521361b9a0efc0c1
font_01_sfnt_off00007b04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B04 12164 bytes
SHA-256: b40b078a2b414a689a91066ad3387550bde00523ed5e7e8318bd888a85ef087e