Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d5c11992d48529e…

MALICIOUS

PDF

46.5 KB Created: 2020-11-08 01:10:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 071d87aea7a71b02446d7fe2189f55ba SHA-1: 4e55cd3827f4b07491c87b87aabbfe89e43fa568 SHA-256: 9d5c11992d48529ed9b026f8605ac216d7812135d93d2cb2f719a684b9cea7ee
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://traffset.ru/aws?keyword=madlib+raw+cakes+download PDF link annotation
    • https://funiwulew.weebly.com/uploads/1/3/2/8/132814073/juzij_jufimug.pdfIn PDF document text
    • https://siwikuzovusodig.weebly.com/uploads/1/3/4/3/134357046/vutegogijodejasuxim.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421472/normal_5f9799a4b74a8.pdfIn PDF document text
    • https://koxokigibobov.weebly.com/uploads/1/3/4/6/134600250/lulof_soxigotarozare.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368496/normal_5f94590850135.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://gojifededub.files.wordpress.com/2020/11/ziziraduxixunox.pdfIn PDF document text
    • https://s3.amazonaws.com/vavebufevodutob/girl_filter_snapchat_code.pdfIn PDF document text
    • https://modiginofom.files.wordpress.com/2020/11/87357023494.pdfIn PDF document text
    • https://s3.amazonaws.com/wusone/redtron_vst_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60bd8e9f-130c-4bfa-a12d-ec4e98bed810/zeratunavobomanenomusama.pdfIn PDF document text
    • https://kovipuwixo.files.wordpress.com/2020/11/retowakeborokulojukoz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fbe0bfd1-d2d9-4d0d-9889-efe4dd74f391/dekefun.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae93badb-6bd4-43ce-9c1d-4642d3e52b40/40896644900.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006122.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6122 2856 bytes
SHA-256: 2cdd336d4ad4698270d9077a3b8ade5aca6d4decd0916d5d918882b18b5a1806
font_01_sfnt_off00006b4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B4D 5232 bytes
SHA-256: 25960cf76c16699e18eceab5a0a5d807d1cc46043c2f261b915c32ef224cbabf
font_02_sfnt_off00007d45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D45 14536 bytes
SHA-256: 6dacfc51680f97674b8677525d17ffa2cf6bd777f07242d0720e45d4eb011b5b

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