Malicious PDF — malware analysis report

Static analysis result for SHA-256 7823959953ca5389…

MALICIOUS

PDF

40.5 KB Created: 2020-10-13 10:55:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-16
MD5: 382ec232ed7a2f86856dbc768907aa3d SHA-1: be009af4c7726bfffe5995c4206aee267bf72e25 SHA-256: 7823959953ca53898616670c1719062db50309a3ca97fe2ceba6f60407e8237c
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://gettraff.ru/strik?keyword=chess+master+game+download+apk In PDF document text
    • https://site-1039804.mozfiles.com/files/1039804/63911519617.pdfIn PDF document text
    • https://site-1038558.mozfiles.com/files/1038558/80099618789.pdfIn PDF document text
    • https://site-1036898.mozfiles.com/files/1036898/26288843124.pdfIn PDF document text
    • https://site-1036786.mozfiles.com/files/1036786/35930202449.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/roruj-fegedevovelere-zexomojikazi-rewubujelem.pdfIn PDF document text
    • https://site-1043456.mozfiles.com/files/1043456/dilusunulipibewebuwam.pdfIn PDF document text
    • https://site-1038489.mozfiles.com/files/1038489/40951222554.pdfIn PDF document text
    • https://site-1036745.mozfiles.com/files/1036745/37616282811.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/1/0483/7739/7405/files/jatedukovos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9410/5509/files/90598551366.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004929.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4929 5436 bytes
SHA-256: cf375a98129c9bfd9beac39a8ff78bb195bbfb1878e57de4180a13f6fc19f00e
font_01_sfnt_off00005b8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B8C 10548 bytes
SHA-256: 889738f1e03101de9d5b8aba784b63eeb170ba5e6fe185f0ea653ca36609da0a
font_02_sfnt_off00007fc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FC8 16204 bytes
SHA-256: 50825423e9a756dbd010b437e595fd7fc565923790453243370bca58b4d2d492