Malicious PDF — malware analysis report

Static analysis result for SHA-256 14e6e8a976dd1cda…

MALICIOUS

PDF

41.3 KB Created: 2020-10-07 16:56:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 475e36ca1384ec18244f2c7e74d68c44 SHA-1: 307402ad678b2d0af43dd927ed7ec25338e2641a SHA-256: 14e6e8a976dd1cda3d44ca5eaa7b85ad64adeb7de8a355aa11b3267a27ee76a7
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://cctraff.ru/strik?keyword=convert+scanned+pdf+to+word+free+ocr In PDF document text
    • http://files.academicswithaplus.com/uploads/1/3/1/8/131871979/gobefetoguzuwe_nekorudusiv.pdfIn PDF document text
    • http://files.zega-pen.com/uploads/1/3/2/6/132696158/8b64c.pdfIn PDF document text
    • http://files.dryanbuford.com/uploads/1/3/0/7/130775241/zawutakekabago.pdfIn PDF document text
    • https://site-1040129.mozfiles.com/files/1040129/vibepogifirifugegopel.pdfIn PDF document text
    • https://site-1036848.mozfiles.com/files/1036848/87509404588.pdfIn PDF document text
    • https://site-1036855.mozfiles.com/files/1036855/72695468560.pdfIn PDF document text
    • https://site-1036848.mozfiles.com/files/1036848/vubasobe.pdfIn PDF document text
    • https://site-1042880.mozfiles.com/files/1042880/60268920551.pdfIn PDF document text
    • https://site-1040997.mozfiles.com/files/1040997/51545594208.pdfIn PDF document text
    • https://site-1039285.mozfiles.com/files/1039285/gevivikakowosijexerik.pdfIn PDF document text
    • https://site-1036812.mozfiles.com/files/1036812/mavopewaj.pdfIn PDF document text
    • https://site-1039175.mozfiles.com/files/1039175/roluwuxunugininaxaba.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000063af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63AF 5176 bytes
SHA-256: 66e9af17c7f15977744493a0e2348849834050fb481fddae591ae5d143e5caad
font_01_sfnt_off0000756c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x756C 10128 bytes
SHA-256: c8b78cdf1b169138d32de8114820a8b2c16f3e0952f898b159ae84690f8b4262