Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5c1f0294552520b…

MALICIOUS

PDF

47.5 KB Created: 2020-10-03 01:05:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 8177dde7101c64d46a964e66ca591d43 SHA-1: 9dfdcd835761fe458df5b8c13980d0b059e8be8a SHA-256: d5c1f0294552520b1ed90f27e2d44efb6d5e93516b919459378999e42fde04da
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/pify?keyword=community+service+quotes+bible In PDF document text
    • http://files.katarzynasawicz.com/uploads/1/3/1/0/131069887/213760.pdfIn PDF document text
    • http://files.kgraykaliana.com/uploads/1/3/2/6/132695575/1ce896054f5e7e4.pdfIn PDF document text
    • http://laxos.scalpics.com/uploads/1/3/0/8/130873995/c9b1c9c26205a.pdfIn PDF document text
    • http://nires.elcachurchesofnemt.org/uploads/1/3/0/7/130776225/buzuzumebaref-soxuzijux-bijader-zofote.pdfIn PDF document text
    • http://files.mrbuttsushistory.com/uploads/1/3/0/7/130739232/189207833ddad8.pdfIn PDF document text
    • http://komuzabem.farmhousecandle.co/uploads/1/3/2/7/132740837/0167ec797f45ba1.pdfIn PDF document text
    • http://danofetag.redknightsspokane.com/uploads/1/3/2/6/132681081/zugivolor_dewur.pdfIn PDF document text
    • http://febex.shannonglasheen.com/uploads/1/3/1/0/131070213/xusapajonuf.pdfIn PDF document text
    • https://site-1036644.mozfiles.com/files/1036644/nekofelesimabad.pdfIn PDF document text
    • https://site-1037824.mozfiles.com/files/1037824/92922368111.pdfIn PDF document text
    • https://site-1038494.mozfiles.com/files/1038494/17854113884.pdfIn PDF document text
    • https://site-1036848.mozfiles.com/files/1036848/53457884484.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/48daba42-20fe-48c2-99a5-0149409a6400/72940525528.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/740cb840-d92e-4aa4-b6cd-6f85c05b385a/46856853963.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d68114a-159c-43dd-9978-4a9753fe5dac/2636162927.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/02baee0e-10c1-4ff2-84d3-9cd7286bcbb4/tagejo.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_off00007c00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C00 5068 bytes
SHA-256: 4472f2733003483d17cc95f7d8dd1986868742af74265b3afe50689ef936d3b9
font_01_sfnt_off00008d3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D3A 10440 bytes
SHA-256: e3135f7f423a65cf0e0ea4ff3503d9dbb7d773397a07b441b254c67ebaf6cde1

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