Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b2efa94b825d175…

MALICIOUS

PDF

45.8 KB Created: 2020-10-02 13:43:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 9ab1f7728d2ace50a1216559f079b30d SHA-1: 170e9630d55c53e2fd1d269964153de9f7d7e538 SHA-256: 9b2efa94b825d1759b72399f407e03aa86882a803d2d34498865542451a4cffd
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=sony+vegas+pro+12+32+bit+crack+download In PDF document text
    • http://files.stcloudchurchofgod.com/uploads/1/3/1/3/131378838/xewegesixufesog_zuduxukuzali_potuj.pdfIn PDF document text
    • http://solid.finethings4u.co.uk/uploads/1/3/0/7/130776447/2977050.pdfIn PDF document text
    • https://site-1036637.mozfiles.com/files/1036637/lejalifob.pdfIn PDF document text
    • https://site-1039209.mozfiles.com/files/1039209/73498153782.pdfIn PDF document text
    • https://site-1038556.mozfiles.com/files/1038556/61822589392.pdfIn PDF document text
    • https://site-1038691.mozfiles.com/files/1038691/73539275936.pdfIn PDF document text
    • https://site-1041486.mozfiles.com/files/1041486/pikidakumixuju.pdfIn PDF document text
    • https://site-1036779.mozfiles.com/files/1036779/49261156238.pdfIn PDF document text
    • https://site-1040503.mozfiles.com/files/1040503/rovebad.pdfIn PDF document text
    • https://site-1037005.mozfiles.com/files/1037005/toneje.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7439/6058/files/11405154215.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4677/2629/files/jean-pierre_harrison_second_wife.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2381/9175/files/84967534829.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000065e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65E3 6152 bytes
SHA-256: 66a5ddc529ca4f5545490fb91962ae6b96795e95a7a03d747f6858bac119d139
font_01_sfnt_off00007b03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B03 14644 bytes
SHA-256: cde128ecd5cc950094f74c463e27bc55a4526373c4474b978cee5a6204cda719