Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3c4f0f3219c2a76…

MALICIOUS

PDF

42.1 KB Created: 2020-11-03 01:36:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 244579784d2f8e8c9d01c993fae14645 SHA-1: 374ee03d0a3fcc3934369368804cd533edd1df2c SHA-256: c3c4f0f3219c2a76ed60a66df29cba1d421f41cb9a7373a74f29ca2cc599c2bc
94 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.link/123?keyword=sample+of+bona+fide+marriage+affidavit'. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the embedded link is the primary indicator of malicious intent, likely serving as a lure for a phishing attack or to download a secondary payload.

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=sample+of+bona+fide+marriage+affidavit In PDF document text
    • https://cdn-cms.f-static.net/uploads/4370088/normal_5f9aaf5551716.pdfIn PDF document text
    • https://jaserasozupog.weebly.com/uploads/1/3/1/4/131454215/mosajesu_wegeger_wizifelem.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370066/normal_5f943ce1dde7d.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/1/0266/8671/8128/files/jurnal_paradigma_penelitian_kualitatif.pdfIn PDF document text
    • https://s3.amazonaws.com/dazinibonofobi/kavarumejujo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5524/2651/files/15385104169.pdfIn PDF document text
    • https://s3.amazonaws.com/vonuxagupeduze/middle_grades_social_studies_praxis_study_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3bba3723-b73a-4729-a734-741719816108/ferume.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8810/1030/files/complete_university_guide_league_tables_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/sazixipame/hallelujah_guitar_tab_fingerstyle.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7b8ddb8-de43-4fa2-bb1f-fc62c9c293ba/mavakakuwagupilevu.pdfIn PDF document text
    • https://s3.amazonaws.com/pusolefosex/festool_router_table_australia.pdfIn PDF document text
    • https://s3.amazonaws.com/senodiw/soxafotutatap.pdfIn PDF document text
    • https://s3.amazonaws.com/daraniwekamidir/metabolisme_protein_dalam_tubuh.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_off000065a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65A3 5488 bytes
SHA-256: 55ed8f9fcedbeb5cd848b7a2c62bfea74167c8c60b86b4d7e5bce597d41ab41c
font_01_sfnt_off00007835.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7835 10384 bytes
SHA-256: dd412bd99390690ceb1d0a26f036e5ca2e5998d859000a20b509bde63030dad5

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