Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9e8579f0dabcc5a…

MALICIOUS

PDF

60.0 KB Created: 2020-10-05 04:19:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: f0196a96dc7623d5597d462db43797f2 SHA-1: 78603dfe7e38370c467daf1944954db6713e7b7c SHA-256: b9e8579f0dabcc5a6650a4b0c4c36fe8fc64bf498b0f0ed7f7ab6edd6c4e9433
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=ian+clayton+the+order+of+melchizedek+book In PDF document text
    • https://site-1039570.mozfiles.com/files/1039570/wawewipoguforujix.pdfIn PDF document text
    • https://site-1039967.mozfiles.com/files/1039967/sodujujezujekadazemi.pdfIn PDF document text
    • https://site-1039817.mozfiles.com/files/1039817/82673452471.pdfIn PDF document text
    • https://site-1038517.mozfiles.com/files/1038517/nofejafoti.pdfIn PDF document text
    • http://muzuwoz.mondaydesignstudio.com/uploads/1/3/0/7/130775478/tujixitogisureb-mokukozagezos.pdfIn PDF document text
    • http://files.cricketmanpress.com/uploads/1/3/2/6/132681625/kavatevadolubud-xided-kulezovupe-bododu.pdfIn PDF document text
    • http://gufamop.thecrimsoncaravan.com/uploads/1/3/1/8/131857112/5920d.pdfIn PDF document text
    • https://site-1037048.mozfiles.com/files/1037048/47648642365.pdfIn PDF document text
    • https://site-1036630.mozfiles.com/files/1036630/lerewilonoka.pdfIn PDF document text
    • https://site-1036667.mozfiles.com/files/1036667/78526612338.pdfIn PDF document text
    • https://site-1036975.mozfiles.com/files/1036975/mamijijudogazewadovix.pdfIn PDF document text
    • https://site-1036993.mozfiles.com/files/1036993/64228107770.pdfIn PDF document text
    • https://site-1036894.mozfiles.com/files/1036894/xudibipefilaxazepem.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000a18a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA18A 5376 bytes
SHA-256: 437983732f046fd7c4c56e474535f5685a54781e0774245babd4f54c80ba5604
font_01_sfnt_off0000b3bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB3BB 14944 bytes
SHA-256: e54e9f1d7bcaf823531bd741e4189bfb04780211360435e08c969e8a37a07fb1