Malicious PDF — malware analysis report

Static analysis result for SHA-256 234bbefb85223df3…

MALICIOUS

PDF

44.9 KB Created: 2020-11-04 10:39:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: a11d6b144558b86965c2fc09299eb414 SHA-1: 90816d7ee3a4ca5a2e71d7b2d6414c7b1d7d23f5 SHA-256: 234bbefb85223df377be811f3a7383749fd6ba979fef28094fb57baf981492c2
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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://ttraff.me/123?keyword=ffxv+leviathan+guide In PDF document text
    • https://kuzaloxamuw.weebly.com/uploads/1/3/1/4/131406684/954920f9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380228/normal_5f8b5b7bcf73c.pdfIn PDF document text
    • https://pigofularujatuf.weebly.com/uploads/1/3/4/3/134360020/nevesezulopadas.pdfIn PDF document text
    • https://togitarusufojir.weebly.com/uploads/1/3/2/6/132681229/gupawotebakefu_zatamem_gelarudiwaxivo.pdfIn PDF document text
    • https://xasugalepo.weebly.com/uploads/1/3/4/3/134311154/jafemiwalawozixudete.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/6444/8955/files/tuck_everlasting_chapter_5_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/jiguwuzobozobaz/agile_project_management_with_kanban_eric_brechner_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/banula/rheumatic_heart_disease_treatment.pdfIn PDF document text
    • https://s3.amazonaws.com/retisovojor/kakadisusewatukimuguzi.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_off00006813.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6813 3012 bytes
SHA-256: 6c307ba60cadde95073699babde7790cc691d89e3e1f94789bbada93b75d2ca3
font_01_sfnt_off000072d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72D8 4980 bytes
SHA-256: e643c6a283f2afef21a5e14d3a37c8ab60bc7ddf7311c910afc99aeb1d8e0acf
font_02_sfnt_off000083d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83D7 10500 bytes
SHA-256: 0304f86ba56093ad09f6ece9e41c1792e5ade4a261b9aab0d5adb853655a4790