Malicious PDF — malware analysis report

Static analysis result for SHA-256 4413e0c5e14f806f…

MALICIOUS

PDF

48.3 KB Created: 2020-10-01 09:08:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-05
MD5: 40ff2ba72af2d48abccc5575761778b2 SHA-1: 248c55a84e8503b76954851c29415844d0aa80b3 SHA-256: 4413e0c5e14f806ffb7183397072348b4f20ce8601aea2b3101f0f7a6a7951bb
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=bis+in+idem+tribut%25C3%25A1rio+pdf In PDF document text
    • http://nezuku.reneekhatami.com/uploads/1/3/0/7/130775350/199971.pdfIn PDF document text
    • http://files.hermosahistory.com/uploads/1/3/0/9/130968925/gijosobatetatasa.pdfIn PDF document text
    • http://files.alexandraorme.com/uploads/1/3/0/7/130775554/1598442.pdfIn PDF document text
    • http://files.jakecassarbushcraft.com/uploads/1/3/1/4/131407635/watowubuf-kizewujedirena-pemixupop-fokenidevomo.pdfIn PDF document text
    • http://tobamija.royaloakgsrp.com/uploads/1/3/2/7/132740778/wafulonotosewavum.pdfIn PDF document text
    • https://site-1037180.mozfiles.com/files/1037180/61348971336.pdfIn PDF document text
    • https://site-1036629.mozfiles.com/files/1036629/62686214867.pdfIn PDF document text
    • https://site-1036695.mozfiles.com/files/1036695/sutijinizezezavowun.pdfIn PDF document text
    • https://site-1036997.mozfiles.com/files/1036997/96323879046.pdfIn PDF document text
    • https://site-1037188.mozfiles.com/files/1037188/53670936465.pdfIn PDF document text
    • http://files.dylanness.com/uploads/1/3/0/9/130969819/860cb.pdfIn PDF document text
    • http://liwepujo.livinweedy.net/uploads/1/3/0/8/130814328/df810284ef8e4.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00007d35.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00007d35.bin)
    • 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 extracted file (font_00_sfnt_off00007d35.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007d35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D35 5368 bytes
SHA-256: cec83352b8bd815be8b97c534dc2439737506759b8fe0fad31b3f7de69bd0c17
font_01_sfnt_off00008f59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F59 10740 bytes
SHA-256: 972d6aeae8e337887ab8ad4614b4a05ecc1ce46536aaaaf2c007f90730de0274