Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8b32568961a3291…

MALICIOUS

PDF

56.6 KB Created: 2020-11-07 17:47:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-04-06
MD5: 6a3f8b8402efbdc7adb65cdf8e762579 SHA-1: c303afdc9a605f83ea8c6d702f992f53a9d4279f SHA-256: a8b32568961a32913b5e01c9a0d3a9ef2699ee8ce044ace4c01c2ad57ccfa80e
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/wb?keyword=2018%20infiniti%20q60%20manual%20transmission In PDF document text
    • https://bupaduzisi.weebly.com/uploads/1/3/4/4/134475958/4f2f9cc7e4b3e.pdfIn PDF document text
    • https://s3.amazonaws.com/wukevirenesu/kosugiwari.pdfIn PDF document text
    • https://gozaxuvo.weebly.com/uploads/1/3/4/6/134612917/murabuvikisoletep.pdfIn PDF document text
    • https://banafazag.weebly.com/uploads/1/3/4/3/134325205/0ad8e.pdfIn PDF document text
    • https://wefamojugibe.weebly.com/uploads/1/3/1/1/131164519/gadizalisu-komikukola-dozopunemufag.pdfIn PDF document text
    • https://rofibefis.weebly.com/uploads/1/3/4/1/134131293/658461d14e5.pdfIn PDF document text
    • https://xabisemegebo.weebly.com/uploads/1/3/4/4/134491474/5544572.pdfIn PDF document text
    • https://s3.amazonaws.com/vifusupegiza/30830323404.pdfIn PDF document text
    • https://wovuxitijijigot.weebly.com/uploads/1/3/4/5/134524902/jobalur.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366050/normal_5f88fc7ad11b9.pdfIn PDF document text
    • https://kumufovuteli.weebly.com/uploads/1/3/4/6/134607328/9495096.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00008705.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00008705.bin)
    • https://uploads.strikinglycdn.com/files/8449882b-ee0c-4f64-a1ca-ba7c39e6dad9/71068937788.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 extracted file (font_00_sfnt_off00008705.bin)
    • http://dejavu.sourceforge.netIn extracted file (font_02_sfnt_off0000c0b3.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_02_sfnt_off0000c0b3.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008705.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8705 5616 bytes
SHA-256: df146b6d76ea391c697507266a74bfcdac8199d6040db6346a0a35eba3cbee6a
font_01_sfnt_off00009a0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A0B 11288 bytes
SHA-256: 0c6dbf76d090c381d3d93f3f422f8ec3cba6adafb7027129f0e1c7485fc06ec2
font_02_sfnt_off0000c0b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC0B3 16060 bytes
SHA-256: 3e116717cad20e2c0569d91da9894c93837aca48344ac8952af0b12a81aa0141