Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e8af1a5127e8182…

MALICIOUS

PDF

37.2 KB Created: 2020-10-31 11:24:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: c829c8bc6e5d6638488a7b60c07a7799 SHA-1: 25eb9d8d81ce061bf1da16e5e3401f9a95660e7d SHA-256: 9e8af1a5127e8182812899c0703200b4faf49bf66d7cadda30454c0cfa28bd23
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.cc/123?keyword=intermix+madison+ave In PDF document text
    • https://cdn-cms.f-static.net/uploads/4378149/normal_5f8f06797eaa4.pdfIn PDF document text
    • https://lipowuripipu.weebly.com/uploads/1/3/1/3/131378852/dbf724c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405904/normal_5f960cb365bec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373511/normal_5f9cd53fa8fa1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368238/normal_5f8e2ae7f304b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383918/normal_5f90b75e0d388.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376096/normal_5f94c50c717d3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417652/normal_5f966cf13d4bf.pdfIn PDF document text
    • https://kubuwexujilo.weebly.com/uploads/1/3/4/4/134473085/vajig-simubig-gevekawuzi-wemod.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/mesotodimus/55476876229.pdfIn PDF document text
    • https://s3.amazonaws.com/sivanira/amino_acid_sequence_converter.pdfIn PDF document text
    • https://s3.amazonaws.com/robumuduluwise/counterparty_credit_risk_brigo.pdfIn PDF document text
    • https://s3.amazonaws.com/jarawaxanivu/21038439963.pdfIn PDF document text
    • https://s3.amazonaws.com/zedilegol/ansys_mechanical_apdl_tutorial.pdfIn PDF document text
    • https://s3.amazonaws.com/jixerubowi/36530701490.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/22296643413.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_off000053a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53A6 5004 bytes
SHA-256: f7690812b566d09e24effcad68bec7666fa75d0bfac7ad85f4350111dff3f3f1
font_01_sfnt_off00006495.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6495 10396 bytes
SHA-256: b546ac36df0e0ca95ef69b22acdadd1ef16142cae304edf97a6c1dc332ec0522