Malicious PDF — malware analysis report

Static analysis result for SHA-256 ada310a79910f68e…

MALICIOUS

PDF

45.8 KB Created: 2020-10-14 23:03:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 1585d9304e0f6b8fc6d8849811fd2235 SHA-1: 71e8e870a764c93f5686ac48491e431ae3ac30e7 SHA-256: ada310a79910f68e31477874714c8a27d3cdb94d72f19c98b16aad9cf72a29bc
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://gettraff.ru/123?keyword=jolly+phonics+book+1+worksheets In PDF document text
    • https://site-1036911.mozfiles.com/files/1036911/sokitame.pdfIn PDF document text
    • https://site-1039923.mozfiles.com/files/1039923/77058750378.pdfIn PDF document text
    • https://site-1038743.mozfiles.com/files/1038743/mulezedabuxigamujanul.pdfIn PDF document text
    • https://site-1042625.mozfiles.com/files/1042625/28238386857.pdfIn PDF document text
    • https://nukevokisoget.weebly.com/uploads/1/3/2/7/132711970/3591910.pdfIn PDF document text
    • https://gusumadanu.weebly.com/uploads/1/3/2/6/132695601/pasex.pdfIn PDF document text
    • https://jeponiruwapin.weebly.com/uploads/1/3/0/7/130776483/fozojige-fagejo.pdfIn PDF document text
    • https://zulatikuwa.weebly.com/uploads/1/3/0/7/130776211/zuguxuferufuba_sojuwefu.pdfIn PDF document text
    • https://juragubiv.weebly.com/uploads/1/3/0/8/130874328/03fb1a04.pdfIn PDF document text
    • https://dapujevubo.weebly.com/uploads/1/3/1/4/131438680/wijiliso.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366032/normal_5f86fa890a34b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366047/normal_5f871dd9b4ad5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365580/normal_5f872c3f6ff5a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366399/normal_5f870f1a5e0ca.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/71f83cc4-09ce-41c3-a044-5176acfeb9b5/nofafi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/638c647d-99cf-4b26-94bf-b42d67de109f/20867481271.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/76c25857-ca77-45c1-a42a-1d052c0c4346/xerox.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a691f3d2-f03e-4358-8ae8-4bf9735585f3/megivup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc6f5e34-d31d-4053-94e5-eae55b99e035/69241448072.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/2845/4842/files/votagozorox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/5901/4551/files/black_widow_costume.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/3326/4806/files/bunker_hill_security_camera_reviews.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_off000073cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73CF 5248 bytes
SHA-256: 782bd838aea9140d5f7957cb7169159c98d3fe4507604416982a8bcde303fb02
font_01_sfnt_off000085b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85B8 10512 bytes
SHA-256: 2bf7a822a2a5c121a2dbd6532271d60bad5a8b75008c8622203ca6cf9a69c5b3