Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba1e6276aa4d2da6…

MALICIOUS

PDF

43.8 KB Created: 2020-10-14 18:17:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 6a7bb4aaaced5e592f5c20f55332d8f0 SHA-1: 37fb9e0d9efa9bf45d5058425b035172b1c9518d SHA-256: ba1e6276aa4d2da67e64524e00cc31c24ad8e5cd363ab1a9ef5114b96da06a87
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://gettraff.ru/pify?keyword=pulmonary+embolism+guidelines+2020 In PDF document text
    • https://site-1039777.mozfiles.com/files/1039777/memisufivu.pdfIn PDF document text
    • https://site-1039222.mozfiles.com/files/1039222/zafozufonuxanefunetodole.pdfIn PDF document text
    • https://site-1043532.mozfiles.com/files/1043532/busigatavupukevam.pdfIn PDF document text
    • https://site-1036955.mozfiles.com/files/1036955/88558131530.pdfIn PDF document text
    • https://site-1036838.mozfiles.com/files/1036838/99454211808.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366354/normal_5f87124b0685b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365583/normal_5f870660c58f7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366040/normal_5f870264d1853.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365570/normal_5f8700f7ddaed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365602/normal_5f86fe7512fd6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366057/normal_5f8707b05b522.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366377/normal_5f870ec1ba015.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ae8f2a0-69ad-4368-bca2-ba07b315bcfb/66271121836.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/242377e4-71ff-4cd2-b9b5-319c0bf7cfcd/feriginamifepuruzor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5062/3385/files/bixagap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1695/1704/files/dnd_5e_aberrations_language.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b4ef6cbc-b0b8-424a-956d-227b9cb935a5/90778736192.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/26dc6d02-113e-48f6-a80c-e66504fa8214/3422275920.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aec07b6c-b551-4cf8-8eac-8e427d8213a9/sanugeguzomavifeme.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/25fb8d07-42b4-46c4-8c45-eed565fd06ce/68804236503.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9403330f-b080-4ac4-a245-6d9eb6dba63b/89671619267.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_off00006b7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B7A 5660 bytes
SHA-256: a5736d2581e002fbd414f19d2e2ef6e38485d4b8bfb04288c2aef35625519569
font_01_sfnt_off00007ea2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EA2 10264 bytes
SHA-256: f0411dbc731d81ae97cb49bda5688e974ce3157b6c5b99469521094ea9783e78

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