Malicious PDF — malware analysis report

Static analysis result for SHA-256 36d3e07b650ca00c…

MALICIOUS

PDF

41.7 KB Created: 2020-10-06 20:10:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: f32c241cf7d6bbcf45a1e8d56940a18d SHA-1: a80bf19c0f18a11c59fb79382d060aea073edd36 SHA-256: 36d3e07b650ca00ce481d48e5a9f8b1fff297be61c8ead5c5f8dcb659d0033bd
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/strik?keyword=now+i+feel+better+than+before+sanjay+raval+pdf In PDF document text
    • http://files.rehbocksolutions.com/uploads/1/3/1/4/131437515/9b8874.pdfIn PDF document text
    • http://tunip.princessinthemirror.net/uploads/1/3/0/7/130775565/folixivebijezex_waroxud.pdfIn PDF document text
    • http://files.ivesart.com/uploads/1/3/0/7/130740589/3180836.pdfIn PDF document text
    • http://files.journeystheroadhome.org/uploads/1/3/0/8/130813025/527a2bb2f088.pdfIn PDF document text
    • http://botonowos.missgoob.com/uploads/1/3/1/4/131437871/d1ec534f5ba7dfd.pdfIn PDF document text
    • http://files.howellcrossroads.org/uploads/1/3/0/8/130874110/zunobatuwog.pdfIn PDF document text
    • http://files.naunavs.org/uploads/1/3/1/6/131637553/cbef182d76258b.pdfIn PDF document text
    • http://liseteb.myentouragemusic.com/uploads/1/3/1/3/131379830/pukilinadite-teligogivok-mulun.pdfIn PDF document text
    • http://wipeb.tashstouchgothicclothing.com/uploads/1/3/1/4/131483128/c3f3ec05253.pdfIn PDF document text
    • http://defagop.siscommunitygarden.com/uploads/1/3/0/7/130776138/zajazosedipapew.pdfIn PDF document text
    • http://files.icanisciolti.com/uploads/1/3/1/8/131856565/radeliwetiruxol_mizunipusu_tomivuxipiwor.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/1/0440/5949/2517/files/figure_of_speech_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/9014/4160/files/kenubeja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/3751/0817/files/64099253784.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_off00005a4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A4A 5568 bytes
SHA-256: b92a5e646bd4a919f2eedea8be2d04ac3221e8aa0b06791509fb8b34ab284c52
font_01_sfnt_off00006d54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D54 14360 bytes
SHA-256: 0e307e41618b1b762be19f27d8f12f575ddcfe969b18ec049e649f7493b9a8d1