Malicious PDF — malware analysis report

Static analysis result for SHA-256 6292354da439df18…

MALICIOUS

PDF

36.5 KB Created: 2020-10-01 23:30:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 7bc56ec5a8a58a5b451357ebe928cf38 SHA-1: c523a4c043f765a950d38706a2437e6e1eaacd95 SHA-256: 6292354da439df185a36b1dc04402ace59c1436f2b3a94cab705b311d889ba63
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=girls+showing+panties+videos In PDF document text
    • https://site-1037035.mozfiles.com/files/1037035/83054835182.pdfIn PDF document text
    • https://site-1037233.mozfiles.com/files/1037233/52382505175.pdfIn PDF document text
    • https://site-1036960.mozfiles.com/files/1036960/pamaxanadolejisawinesup.pdfIn PDF document text
    • http://files.jennagrober.com/uploads/1/3/0/9/130969434/6783642.pdfIn PDF document text
    • http://nuxumuvir.babyg-lash.com/uploads/1/3/0/7/130775583/1617803.pdfIn PDF document text
    • http://radukikab.thegoodbeerwife.com/uploads/1/3/1/4/131452976/9798587.pdfIn PDF document text
    • http://files.medwayqueen.co.uk/uploads/1/3/1/4/131437636/7293839.pdfIn PDF document text
    • http://texigebo.marriedmarks.com/uploads/1/3/0/8/130813961/56cbe9.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/1/0438/5911/6182/files/lesson_7.3_skills_practice_answers_algebra_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8086/6197/files/cry_lyrics_cigarettes_after_sex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/4173/6862/files/nafusatupulutiwotetosewa.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_off00005022.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5022 5404 bytes
SHA-256: 79fc2c0020ff034e3a4c9dbb6aa92ff6f969862f88bee3ade0dfd5a5b1c48408
font_01_sfnt_off00006292.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6292 10244 bytes
SHA-256: c34c9c83db7834b2e5bd8977554883f41ab1a2eafa7fc2bdcfff0cf9115218d5