Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1d36dc5de5ad534…

MALICIOUS

PDF

43.8 KB Created: 2020-11-08 10:37:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 37a18df93f1780d4c53014818aae65da SHA-1: 5d76fdbacc4f2a2d33b3aae222b3fb269e7a3daa SHA-256: e1d36dc5de5ad534d50726e60c606dd887fd66848ca5e4bf11ebdede494748fb
66 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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://trafffe.ru/aws?keyword=1000+monkey+go+happy+games PDF link annotation
    • https://pabifiliponisod.weebly.com/uploads/1/3/4/3/134367040/5643165.pdfIn PDF document text
    • https://dumetokewip.weebly.com/uploads/1/3/4/3/134394823/a0b8394acb0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375702/normal_5f8f4195aad47.pdfIn PDF document text
    • https://pulepuvoko.weebly.com/uploads/1/3/4/2/134266128/9410539.pdfIn PDF document text
    • https://pesegoniz.weebly.com/uploads/1/3/4/4/134497823/4fa65dff.pdfIn PDF document text
    • https://kunisalopug.weebly.com/uploads/1/3/4/3/134315348/85d2e7ef45bece5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383913/normal_5f9aca5980411.pdfIn PDF document text
    • https://lubozukutiximik.weebly.com/uploads/1/3/4/4/134472848/f87957c7318d08.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/039dec1c-87e3-4344-afd3-98539a5a9eb3/85529679336.pdfIn PDF document text
    • https://romekelisefo.files.wordpress.com/2020/11/nitunawikudaremutujozudok.pdfIn PDF document text
    • https://felibule.files.wordpress.com/2020/11/39295054780.pdfIn PDF document text
    • https://dopukomewudu.files.wordpress.com/2020/11/flexible_manufacturing_systems_in_practice.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004ca7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4CA7 5028 bytes
SHA-256: a7f7751d7535f67d216e538eb0bf215dae26a8eb770b009e6c6730e5d2f8acdf
font_01_sfnt_off00005d89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D89 9864 bytes
SHA-256: d32f29b8ad1e9d23b0af3bec3a2ac8dc48a79c650822c61e91ab1fb5228c8995
font_02_sfnt_off00007f82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F82 16084 bytes
SHA-256: b4071eb911d8dc62449cbe34e7b91a69a4d2916191845e014595e4e5e6ec2879
font_03_sfnt_off00009430.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9430 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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