Malicious PDF — malware analysis report

Static analysis result for SHA-256 5028017d102af2e7…

MALICIOUS

PDF

40.5 KB Created: 2020-11-04 19:46:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: c70feb92230ebe8a975429760d4d3087 SHA-1: 12420d38c829a2b8c4310b53f377c5992f1b1de6 SHA-256: 5028017d102af2e7c75c375c8445d98e85761bfdeafb80a127018e1fff283351
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.link/123?keyword=annies+ice+cream In PDF document text
    • https://polabufasol.weebly.com/uploads/1/3/2/8/132814050/tovakuboxe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401973/normal_5f9d8960dc957.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382973/normal_5f918dc807b1f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375199/normal_5f96a2edea22b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380214/normal_5f9b2be11e67a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427785/normal_5f9e500626daa.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/d8781803-38e0-44c4-9018-a122e8250ef2/63224762504.pdfIn PDF document text
    • https://s3.amazonaws.com/xoxaneral/xisubilafogibipixuzurak.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/62071131666.pdfIn PDF document text
    • https://s3.amazonaws.com/digigitusuduk/burn_after_writing_book_five_below.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_off0000562f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x562F 2900 bytes
SHA-256: b3dfb2f2c41da7350fc3755141d2fd0ea5796bb125df25fec831093623ff73df
font_01_sfnt_off00006072.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6072 4900 bytes
SHA-256: b450897a8386d3412b2b49ea86b4b062d6f814274bfe2450cdb13813479a9061
font_02_sfnt_off00007109.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7109 10644 bytes
SHA-256: d60c20596f62fdddd87519de1dd034a46c0aec065371de359764bf4376944681