Malicious PDF — malware analysis report

Static analysis result for SHA-256 46bebeeb9a7c3ef1…

MALICIOUS

PDF

68.3 KB Created: 2020-10-13 07:32:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: b9ac46f9952ab6be83de670b12d1b2b8 SHA-1: 61da67eb010bee276fc53c354beb290a812ba720 SHA-256: 46bebeeb9a7c3ef1b7d9c43071963dbfbe8721222e2e1556a7cccf9806b7ad9e
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=polymyositis+and+dermatomyositis+pdf In PDF document text
    • https://site-1043442.mozfiles.com/files/1043442/90944467159.pdfIn PDF document text
    • https://site-1042275.mozfiles.com/files/1042275/siwatu.pdfIn PDF document text
    • https://site-1039877.mozfiles.com/files/1039877/13654484622.pdfIn PDF document text
    • https://site-1036868.mozfiles.com/files/1036868/remixugobomokomoditez.pdfIn PDF document text
    • https://site-1042711.mozfiles.com/files/1042711/7249098557.pdfIn PDF document text
    • https://site-1036783.mozfiles.com/files/1036783/sefiselesulutizujedabi.pdfIn PDF document text
    • https://site-1041860.mozfiles.com/files/1041860/98538126622.pdfIn PDF document text
    • https://site-1037018.mozfiles.com/files/1037018/xofedon.pdfIn PDF document text
    • http://files.chapsrugby.com/uploads/1/3/1/6/131637896/zivas-bojobeja-zawutedi-fuxusunipituju.pdfIn PDF document text
    • http://meweluta.elaineyuhomes.com/uploads/1/3/0/9/130969932/wenakufumumor.pdfIn PDF document text
    • http://files.vto-org.com/uploads/1/3/1/3/131378990/4655806.pdfIn PDF document text
    • http://sinuwi.vegasbhs.com/uploads/1/3/1/4/131407635/kazorutapi_vutipolojexu_nuluf.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://uploads.strikinglycdn.com/files/f8becae5-db78-4730-ab8e-45c033ae3fda/dirajogabuzuweda.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/992b9b09-5141-4f9f-949e-a66f49804a87/xugariba.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38aef3ac-3ddc-4d63-977c-7153d5369dea/51484047604.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/853a74e3-ab21-48bb-af23-6a37725fcf2d/rizerovej.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bfc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFC6 5076 bytes
SHA-256: a7601a764f9ceb5235dd700639f67a175cbad28377a8305d62bed4bbb35b3e93
font_01_sfnt_off0000d0ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0ED 10816 bytes
SHA-256: c3e4461b6d815ca5056d5132f03d9fdf017606d8b1b9dfc5462322b6cadd6fd0
font_02_sfnt_off0000f5a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5A0 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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