Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b6fc9755021be13…

MALICIOUS

PDF

49.3 KB Created: 2020-11-04 23:08:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-17
MD5: ed1c2aaf59fdf39de2d226c0fb3974de SHA-1: 990be4ed197c45e3f1c31b7670f28594c079012f SHA-256: 2b6fc9755021be1331c80e3fb1679aae7170460a948b60e429d8dc83860c11ef
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://cctraff.ru/wb?keyword=body%20measurements%20worksheet In PDF document text
    • https://xotuwajugi.weebly.com/uploads/1/3/4/3/134349857/9007699.pdfIn PDF document text
    • https://zumavekuganupa.weebly.com/uploads/1/3/4/3/134366180/873286.pdfIn PDF document text
    • https://nipufijupetobug.weebly.com/uploads/1/3/1/4/131482996/f0a367.pdfIn PDF document text
    • https://lozulijulejibog.weebly.com/uploads/1/3/1/8/131857057/fofukuka_diripifaxesed.pdfIn PDF document text
    • https://pezopipowom.weebly.com/uploads/1/3/1/4/131406060/786382.pdfIn PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/juvuxisodo.pdfIn PDF document text
    • https://tejigenunonim.weebly.com/uploads/1/3/0/8/130813632/xebopuviban.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369307/normal_5f8889e9bccd8.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/3cb113af6.pdfIn PDF document text
    • https://gusumadanu.weebly.com/uploads/1/3/2/6/132695601/5282713.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385410/normal_5f9f6958168c7.pdfIn PDF document text
    • https://xogofodaromaf.weebly.com/uploads/1/3/4/3/134387758/9187472.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/sabobenuwe/medical_dictionary_arabic_english.pdfIn PDF document text
    • https://s3.amazonaws.com/kofabube/root_explorer_apk_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d4c34435-7e54-4ba4-b9b6-088df76244f8/18811118689.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005fc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FC6 5172 bytes
SHA-256: ce52e33bee679da5e61e0070e5875aa484889fe5c645d4c8932de13e05127e06
font_01_sfnt_off0000713d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x713D 10284 bytes
SHA-256: e72c780eb3f22600d9d0f52b6c0dd828c05a4bc920deeb2374ee1bd82bd2aa24
font_02_sfnt_off000094be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94BE 16144 bytes
SHA-256: 18f56b7fae04e07bc119a468ad323bdda099da77b0772854d1c47cc1f39b9f3b
font_03_sfnt_off0000a9be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA9BE 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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