Malicious PDF — malware analysis report

Static analysis result for SHA-256 f502a07cb96de039…

MALICIOUS

PDF

39.0 KB Created: 2020-10-09 10:56:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 3f5a23073a6a5d102153589cb3f00c48 SHA-1: 4c41a8506b94e01f7d46a51cbf8e0933e29f21d9 SHA-256: f502a07cb96de039b1a71ef5dab06484e17fa8ab705d08dd40602ec69d69d79b
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://ggtraff.ru/strik?keyword=green+hill+zone+sheet+music In PDF document text
    • http://files.moneimadwan.com/uploads/1/3/1/3/131379256/vukogoxuj.pdfIn PDF document text
    • http://files.mystical-studio.com/uploads/1/3/1/4/131455903/4257523.pdfIn PDF document text
    • http://razop.angelaguidolinauthor.co.uk/uploads/1/3/2/7/132740412/b655be9673b7f9.pdfIn PDF document text
    • http://nitivu.todpardon.com/uploads/1/3/0/7/130776791/pepezemopopusipuxaxu.pdfIn PDF document text
    • https://site-1037132.mozfiles.com/files/1037132/890536763.pdfIn PDF document text
    • https://site-1037215.mozfiles.com/files/1037215/22166590656.pdfIn PDF document text
    • https://site-1039307.mozfiles.com/files/1039307/tolosewilawetosamewilex.pdfIn PDF document text
    • https://site-1037215.mozfiles.com/files/1037215/zobilalenadajugawowep.pdfIn PDF document text
    • https://site-1038729.mozfiles.com/files/1038729/1080815657.pdfIn PDF document text
    • https://site-1038737.mozfiles.com/files/1038737/nilixogalakujit.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/946fb8b1-7016-445b-976a-6bf1a1d3888d/welaguzaxowivopatojazik.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_off00005bbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BBF 4908 bytes
SHA-256: 32931a9efa0180bb7fba237d36ccb0d656fe493d85a8ead8a5ab0cec1e1cdfeb
font_01_sfnt_off00006c52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C52 10308 bytes
SHA-256: b324b83c1dc3dc5bf428c68125dba2b6a97bf1733ebe61b76fd81690fa8b0a5f