Malicious PDF — malware analysis report

Static analysis result for SHA-256 2323f3ef6d40d777…

MALICIOUS

PDF

42.3 KB Created: 2020-11-08 18:25:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: bf66055884d85f6a98be866c6be7aaf8 SHA-1: 07c8c52cc5532b2016dd90162674b2f964dc6cce SHA-256: 2323f3ef6d40d777e916cec00804dd8d48023c9e3585ed41ff83b6dc30cab11d
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/123?keyword=schuylkill+county+recorder+of+deeds+pa In PDF document text
    • https://nazaxefuv.weebly.com/uploads/1/3/4/5/134589683/jevubijimura.pdfIn PDF document text
    • https://zekasujiminog.weebly.com/uploads/1/3/4/3/134366003/somiwebamup.pdfIn PDF document text
    • https://todurudivi.weebly.com/uploads/1/3/4/3/134344361/jepuwubafoxix.pdfIn PDF document text
    • https://rokufekajo.weebly.com/uploads/1/3/0/8/130814342/2324931.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391327/normal_5f964e2e05d9a.pdfIn PDF document text
    • https://juvuxoxeziw.weebly.com/uploads/1/3/4/3/134313380/navukarigowajefitege.pdfIn PDF document text
    • https://tamagokevalagir.weebly.com/uploads/1/3/0/7/130776783/bikexapojerosan.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://zasalekuvine.files.wordpress.com/2020/11/db_legends_team_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/bikebuduvud/45390666678.pdfIn PDF document text
    • https://s3.amazonaws.com/gifiz/43478260648.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_off00006257.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6257 5512 bytes
SHA-256: 63bf96c263b6d93884715613c72d10a71e1a47756d935362684816836f5fc97a
font_01_sfnt_off00007515.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7515 11144 bytes
SHA-256: c98da730025fbe89d662554a77abb30ef4749942b11befe9ee9eff6f9126103a