Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb70b8797921254e…

MALICIOUS

PDF

54.8 KB Created: 2020-10-25 07:52:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: a6ffc142cae16b92207a8378fcd0e2bd SHA-1: f2797eeba7e2975bdc93face7552be9a1ed2e5ea SHA-256: eb70b8797921254ea1e230a463852801c4b406ac4d933311c5c3a9a8d46739e4
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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 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.
  • 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://ttraff.me/123?keyword=arrow+scroll+in+android+example In PDF document text
    • https://jakemujilofadam.weebly.com/uploads/1/3/1/3/131380171/8533731.pdfIn PDF document text
    • https://sakukavazu.weebly.com/uploads/1/3/1/3/131379729/6258819.pdfIn PDF document text
    • https://putigazabikikim.weebly.com/uploads/1/3/2/6/132682718/piruxubowizogoxex.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/f5d445.pdfIn PDF document text
    • https://wosezobar.weebly.com/uploads/1/3/1/8/131856012/zibutifipexaji.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387806/normal_5f94a2d535ae6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403680/normal_5f927708d9504.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380088/normal_5f8ce83b84461.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/jiguwuzobozobaz/guide_to_plant_pathogenic_bacteria.pdfIn PDF document text
    • https://s3.amazonaws.com/wovigebi/wobunanisepozos.pdfIn PDF document text
    • https://s3.amazonaws.com/degisapemifa/slavery_in_west_africa.pdfIn PDF document text
    • https://s3.amazonaws.com/sepawi/fusionner_deux_logiciel.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/xiwugifaseseviruxavunes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/731542b9-4a76-4be9-b60a-6b2147649db9/54975661730.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d382b7f5-64c6-4e5c-a9ff-19e60cf5e718/suzikujuxuwesasubap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b1d9039-f4fe-4a63-8b8a-c0a5d68be41e/wajuvuxuvegufogu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4da3c5b9-7c1a-4423-b61e-47edcb97ff86/narugamavov.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c66501bb-bb14-463c-91de-802f80b96204/kilokizekexamapinuxodi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb77db1d-0369-47ee-8c01-6cdc16c96a0c/fillable_canadian_pay_stub_free_exce.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c93275af-7967-4d70-8955-58bfc5f5aaba/39321164006.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4eef7d3b-ad46-469e-8bee-e751ce15c5ee/34471210911.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f757bbb8-04eb-4df9-b2bf-82fac538ab7a/98058712285.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_off00008c9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C9A 5368 bytes
SHA-256: 3ac3bd88ebf56e93f49e83d409e7401c48a687c1c348ebe7b7a89d61f7bbed7b
font_01_sfnt_off00009ee0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9EE0 14668 bytes
SHA-256: 2ba8ce3657cda46940fc1537e967feadca31e28bb03218051f903714ccd325af