Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f4b33490907cb0a…

MALICIOUS

PDF

44.2 KB Created: 2020-11-08 05:13:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-20
MD5: e57e92a307157e0b217eea85cc6a14f5 SHA-1: e99790338cf327396092efce3fa0f5a92bf4f287 SHA-256: 6f4b33490907cb0a2f2b5a65f9490bfa811a991a2f99221d427b95b4a42c502f
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://trafffi.ru/123?keyword=takis+ingredients+list PDF link annotation
    • https://jesasifewom.weebly.com/uploads/1/3/1/4/131453969/8d5f6f11.pdfIn PDF document text
    • https://zaxavafu.weebly.com/uploads/1/3/4/3/134323176/wukugoluwagikonosos.pdfIn PDF document text
    • https://kutebebi.weebly.com/uploads/1/3/4/5/134528954/073af7.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/wituvejaji.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393208/normal_5f8ebabdc8003.pdfIn PDF document text
    • https://tivakoxidedopa.weebly.com/uploads/1/3/0/7/130776298/nufelamewe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/bed65ab8-1fe5-453c-903b-508ce37d33cf/diwakali.pdfIn PDF document text
    • https://s3.amazonaws.com/nijudow/frank_longbottom_harry_potter.pdfIn PDF document text
    • https://s3.amazonaws.com/vebogotexaf/51467750883.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e219ce46-54b6-430c-8688-e8030ab5c529/41986376691.pdfIn PDF document text
    • https://s3.amazonaws.com/petuzutemixuvod/26256800648.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_off00005e3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E3E 4684 bytes
SHA-256: c5c9dca080faa3c4db73262dc0528547f9074c04f044e1ccb153cfac8707a61d
font_01_sfnt_off00006e27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E27 11372 bytes
SHA-256: 9134f39a30b6fd1f886067e7b8fccbfa01429ccde2b9fba91a6e165001e03c14
font_02_sfnt_off000094dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94DD 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c