Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e8c53c86d417d06…

MALICIOUS

PDF

53.1 KB Created: 2020-11-07 02:08:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: bcd32fd0a2aebc4ffbb857cf51f135c3 SHA-1: 8a1fdbd576108d75534eb237b9b164d8ab65cdac SHA-256: 3e8c53c86d417d06e4633e506b5da1c02be491f272e21d8b083ee51f974dbefd
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/123?keyword=coraline+by+neil+gaiman+pdf In PDF document text
    • https://togitarusufojir.weebly.com/uploads/1/3/2/6/132681229/navexarozubuzupo.pdfIn PDF document text
    • https://gexaxiwiwa.weebly.com/uploads/1/3/4/4/134480231/gaxuzosuvuwenetiz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366014/normal_5f8a50416fe13.pdfIn PDF document text
    • https://kilunifogewawo.weebly.com/uploads/1/3/4/4/134457757/vagusejoxejije.pdfIn PDF document text
    • https://dugegedop.weebly.com/uploads/1/3/4/3/134338267/565f674.pdfIn PDF document text
    • https://gotitodurafa.weebly.com/uploads/1/3/4/3/134351762/7444060.pdfIn PDF document text
    • https://gadigode.weebly.com/uploads/1/3/2/6/132680949/bf482038f6.pdfIn PDF document text
    • https://paxesejok.weebly.com/uploads/1/3/4/3/134348383/vemukajimatomikog.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367952/normal_5f8c9ba6954e5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://xixunetov.files.wordpress.com/2020/11/13396808339.pdfIn PDF document text
    • https://s3.amazonaws.com/gifojuxaxeva/98289591292.pdfIn PDF document text
    • https://xeruluzolu.files.wordpress.com/2020/11/70004843017.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_off00009120.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9120 5328 bytes
SHA-256: 51da77b3efcf19d155b8ecdbf2f0cbbec0400c170aab3fbee3e25d1f2e19788f
font_01_sfnt_off0000a333.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA333 10892 bytes
SHA-256: ee8a921288a6fb18ad98b29108c078ee08e62265817d4c8ffc7bd01a1a75a595