Malicious PDF — malware analysis report

Static analysis result for SHA-256 66b1a6eb998ee59b…

MALICIOUS

PDF

42.2 KB Created: 2020-11-08 07:32:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 5b1eb5b8c953076860db11731f165dd7 SHA-1: 65258ab74ee7b388da850fd38e6d0af6ee6cd24d SHA-256: 66b1a6eb998ee59b7a841e06efab3c099fbbbc9f0c728a312da0fef643dd61fb
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafffi.ru/aws?keyword=pokemon+legends+5th+relic+guide PDF link annotation
    • https://gijakumode.weebly.com/uploads/1/3/4/3/134306186/6989694.pdfIn PDF document text
    • https://fenawivo.weebly.com/uploads/1/3/4/0/134000055/3e246e096c78ed0.pdfIn PDF document text
    • https://gogimorezi.weebly.com/uploads/1/3/4/3/134316220/92161.pdfIn PDF document text
    • https://nizesuvijeva.weebly.com/uploads/1/3/1/6/131607023/vilawedalote.pdfIn PDF document text
    • https://pudegubazamase.weebly.com/uploads/1/3/1/1/131163945/pifalowij.pdfIn PDF document text
    • https://tadeganerusoza.weebly.com/uploads/1/3/1/4/131438541/bc7fb18f8.pdfIn PDF document text
    • https://jaserasozupog.weebly.com/uploads/1/3/1/4/131454215/a2b1d5.pdfIn PDF document text
    • https://fobuxowomi.weebly.com/uploads/1/3/4/2/134235628/jizedupogenusalunat.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403539/normal_5f9e554263239.pdfIn PDF document text
    • https://vusuvorolom.weebly.com/uploads/1/3/4/5/134501440/dabowanuzafed_werorisosepabu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/fomaralunex/fiwukoxidadugazo.pdfIn PDF document text
    • https://bivananoso.files.wordpress.com/2020/11/89335943961.pdfIn PDF document text
    • https://s3.amazonaws.com/vasofirida/spanish_1_study_guide.pdfIn PDF document text
    • https://nizowowe.files.wordpress.com/2020/11/midesifitir.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_off00006745.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6745 5332 bytes
SHA-256: 220b0b9c688767df03fa17ad228d931ec042895c91e040d9a7c68f50ec9b4094
font_01_sfnt_off0000794d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x794D 10128 bytes
SHA-256: 16a1a9f253089dd4c9d86918351fcbc6dca71733e321e8144063a5ebb55115cb