Malicious PDF — malware analysis report

Static analysis result for SHA-256 5430a1dc9f9b467b…

MALICIOUS

PDF

74.4 KB Created: 2021-02-27 19:23:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 03e873f654023e2de22256e8b9ca09ca SHA-1: 58e1abc7fdf86974bb8727046c15fc3eeaf5ec85 SHA-256: 5430a1dc9f9b467b655926fcb7864ac6ee249f33d086c228849ab69507668e1a
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://dafemum.ru/wb?keyword=romeo%20juliet%20movie%20songs%20download%20in%20masstamilan In PDF document text
    • https://cdn-cms.f-static.net/uploads/4470226/normal_5fdb8551683eb.pdfIn PDF document text
    • https://pukakiliratof.weebly.com/uploads/1/3/4/7/134768090/4521077.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472182/normal_5ff5455c92e8d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447431/normal_6033d39a0ed88.pdfIn PDF document text
    • http://fawikenaxalu.scienceontheweb.net/mabulotab.pdfIn PDF document text
    • http://gepexoliv.medianewsonline.com/how_to_use_samsung_dishwasher_dw80r2031us.pdfIn PDF document text
    • http://jaralet.getenjoyment.net/jesus_christ_the_healer_verse.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501029/normal_5fd2c7b6336e5.pdfIn PDF document text
    • http://jixaravaxagisuf.22web.org/5587489976.pdfIn PDF document text
    • http://mapotilij.mygamesonline.org/wezabegol.pdfIn PDF document text
    • http://tixesikixux.mygamesonline.org/87267402393.pdfIn PDF document text
    • https://vuxilimibipemop.weebly.com/uploads/1/3/1/4/131453056/2621117.pdfIn PDF document text
    • http://zoguponuwuxoli.medianewsonline.com/20029975649.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415322/normal_5fc9a86d9eab5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://situgew.epizy.com/virenepiduxavozipenuroj.pdfIn PDF document text
    • http://kurivixudenetiw.epizy.com/98558180842.pdfIn PDF document text
    • http://dakafatuvuguviz.atwebpages.com/kaximenenumugoti.pdfIn PDF document text
    • http://sinamalamukin.epizy.com/avon_anew_lash_transforming_mascara_serum.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_off0000e6ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6CE 5284 bytes
SHA-256: 70f2766a202ec95cdfbefffcb453290c49895636595405ee825b24086e22dacd
font_01_sfnt_off0000f8d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8D4 10432 bytes
SHA-256: c04f3040bd1187b2906aea36db07c8b03075f0cf5d20e215123412f703468920