Malicious PDF — malware analysis report

Static analysis result for SHA-256 52feb4cd6c5289c1…

MALICIOUS

PDF

43.5 KB Created: 2020-11-09 02:22:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-15
MD5: f9398d70231d3b3adb64b5197024f9c1 SHA-1: 86759508cef8e8bfc1c327caac0612db8c60211a SHA-256: 52feb4cd6c5289c12217df7ed3353dbe9a3e0e51742c48c6b8d808dca2cca357
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffset.ru/123?keyword=star+wars+dark+disciple+pdf PDF link annotation
    • https://rijizego.weebly.com/uploads/1/3/0/7/130776487/vusivivesap-newevagubiduvug.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/tebavu_mofevuz_punoxibera_gijipomole.pdfIn PDF document text
    • https://riwisasivituw.weebly.com/uploads/1/3/1/0/131070703/3503281.pdfIn PDF document text
    • https://pabenegoje.weebly.com/uploads/1/3/4/3/134348732/c2bcb585ea2c9d5.pdfIn PDF document text
    • https://lugafowak.weebly.com/uploads/1/3/4/6/134647172/7025273.pdfIn PDF document text
    • https://buranujepexu.weebly.com/uploads/1/3/4/3/134339299/tereretizexodel-kimogowepojige.pdfIn PDF document text
    • https://suxokigivulumu.weebly.com/uploads/1/3/4/4/134479742/4236128.pdfIn PDF document text
    • https://rojisubul.weebly.com/uploads/1/3/4/5/134593633/luwol_kisivezaj_togoxi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://xaginogal.files.wordpress.com/2020/11/anteproyecto_arquitectonico.pdfIn PDF document text
    • https://gibugorisutu.files.wordpress.com/2020/11/kulaxe.pdfIn PDF document text
    • https://xanafegeze.files.wordpress.com/2020/11/72290861498.pdfIn PDF document text
    • https://nizowowe.files.wordpress.com/2020/11/midesifitir.pdfIn PDF document text
    • https://numuvagun.files.wordpress.com/2020/11/mixed_tenses_exercises_with_answers.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_off00006c4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C4F 5408 bytes
SHA-256: e0ed6e79d067c8cd68ff9e4dc97578ce0a2aa8c21e1829740b8f32056510ece7
font_01_sfnt_off00007edb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EDB 10084 bytes
SHA-256: 4041839c038c4aaa1b386436adc795c284c60424f93315052288d7949a40375a