Malicious PDF — malware analysis report

Static analysis result for SHA-256 def0c809d6323e6e…

MALICIOUS

PDF

56.5 KB Created: 2020-11-09 01:15:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 53bf7aa67d173144764b0f60d9b70ab2 SHA-1: 7cecd68282865f512262ab13462903ff07e759c4 SHA-256: def0c809d6323e6e2dbbcf98ffbc5fed669c43b48852fc331451063347f9d8a6
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/123?keyword=123+movies+online+free+venom PDF link annotation
    • https://mefemanodi.weebly.com/uploads/1/3/1/4/131454269/dc056e.pdfIn PDF document text
    • https://tilafiranude.weebly.com/uploads/1/3/4/3/134314128/kifozepojesan_dujijutesowinuj_viriw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368758/normal_5fa112b46a720.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376380/normal_5fa86d6ee65aa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366402/normal_5f9bef604ee5a.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/71c414e5-a1d3-4ff2-bcdf-1ad0b913e8cc/ooze_twist_slim_pen_instructions.pdfIn PDF document text
    • https://mubizefurero.files.wordpress.com/2020/11/sinekuvasemomutepel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/274dd843-b485-4f3d-aa27-82b4c0ce562f/78963244422.pdfIn PDF document text
    • https://nofagixonuva.files.wordpress.com/2020/11/sejudove.pdfIn PDF document text
    • https://s3.amazonaws.com/kukazowox/rukatirezinoz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/caae2028-7849-433b-aab7-20cc03d800c7/malodelufef.pdfIn PDF document text
    • https://zejifumeg.files.wordpress.com/2020/11/zulesubuxusezoxobarigele.pdfIn PDF document text
    • https://s3.amazonaws.com/gogonof/new_leaf_rom_reddit.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_off0000a051.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA051 5016 bytes
SHA-256: 43a7d9796e118c68f2109d6bf8bd2944c80c49c711e497b876e5424016f4c638
font_01_sfnt_off0000b15f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB15F 10348 bytes
SHA-256: 6d80149bca564fcbd66a97e4aee0faa7bf5f6a897a2166ec8e7be76b33a323b4