Malicious PDF — malware analysis report

Static analysis result for SHA-256 597993a77e990081…

MALICIOUS

PDF

40.9 KB Created: 2020-11-04 16:37:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: e5cf2ec2e9b605d06cd6a1dbeb91cfa2 SHA-1: cd6ac712c091e7970f734f2fe6041f27f8cee45e SHA-256: 597993a77e990081feb15506a7d7bbb0c0bb91f845bfd32de5f157fe5de73004
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/aws?keyword=1998+yamaha+big+bear+350+service+manual In PDF document text
    • https://vafuzetok.weebly.com/uploads/1/3/2/7/132740798/7759374.pdfIn PDF document text
    • https://dosaremuxabibi.weebly.com/uploads/1/3/0/7/130739916/zelevitovafu.pdfIn PDF document text
    • https://mimitokiwunas.weebly.com/uploads/1/3/4/0/134012498/5435317.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403563/normal_5f9713e12409d.pdfIn PDF document text
    • https://xonuveviriniw.weebly.com/uploads/1/3/0/7/130738603/3d93db38.pdfIn PDF document text
    • https://xanugobolenaz.weebly.com/uploads/1/3/4/3/134371028/2172871.pdfIn PDF document text
    • https://bupaduzisi.weebly.com/uploads/1/3/4/4/134475958/wadid.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372735/normal_5f9b6306a8420.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368750/normal_5f8f98b6b5aed.pdfIn PDF document text
    • https://gupugeja.weebly.com/uploads/1/3/4/2/134235999/muzozolu-jodeboga.pdfIn PDF document text
    • https://zetewewab.weebly.com/uploads/1/3/4/4/134479884/xemirifadag.pdfIn PDF document text
    • https://gajokazatiduker.weebly.com/uploads/1/3/4/3/134320060/2415791.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/zunaduxa/74353879853.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_off00005c42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C42 6252 bytes
SHA-256: 5083ea3ddd06bbf537b93e3e7b57eb9c3493f27254c9cad737c944e980c86b3a
font_01_sfnt_off0000716d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x716D 11160 bytes
SHA-256: 67f6bcb0df8ab9c4b334e85f293300d4da9bfa2461e8db0671232ed7f5850805