Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ecf16ebb5a6bdda…

MALICIOUS

PDF

44.6 KB Created: 2020-10-27 02:43:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 2033ce34bcec7c91985adf5dcdf3b890 SHA-1: 1cf896bbe0d583dd30ec68a783b14ac557224b33 SHA-256: 9ecf16ebb5a6bddac21f5252fa15be77a35209658e77e67689e88612051bca52
94 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/123?keyword=madeleine+stowe+nude'. The document body, though heavily obfuscated, also appears to contain this URL. This suggests the primary intent is to redirect the user to a potentially harmful external site, likely for phishing or malware distribution.

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.ru/123?keyword=madeleine+stowe+nude In PDF document text
    • https://dimulawi.weebly.com/uploads/1/3/4/3/134380670/vebifawijezefabikodo.pdfIn PDF document text
    • https://xukanimuwuvam.weebly.com/uploads/1/3/2/6/132696198/ae008302e15cf6b.pdfIn PDF document text
    • https://nikokabiliru.weebly.com/uploads/1/3/1/4/131409463/bakerumorex.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402951/normal_5f9507972c7d9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366646/normal_5f8760b08ecbb.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/jenagubadopi/xisiwevikigumefip.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/rovuwidedetaxitukato.pdfIn PDF document text
    • https://s3.amazonaws.com/jasadavebaga/12119598242.pdfIn PDF document text
    • https://s3.amazonaws.com/sepawi/8875087778.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/24791939829.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e8135d4c-33eb-4fb4-a08b-590fa6b2099a/40793354257.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/798ba3c5-b981-4378-ae34-9b6ae4072aff/bijobuwizaji.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/55a240e5-c5c2-4461-944e-e1363e223f1c/fosepizajosijaziwanor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5169836f-d6d5-4e50-866e-994f01c833a2/42239960050.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4d26ee1-b442-446d-bb5d-db7b6c2697b0/50311380241.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/47391076400.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/materi_bilangan_biner.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0476/5204/4966/files/tejeselapamusipevimajosi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/9897/8489/files/best_point_resort_t20_waterville_mn.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4333/2000/files/burton_valley_elementary_school_calendar.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_off00006722.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6722 4820 bytes
SHA-256: 85a8890388c2b3d94062ae9fb73a82a3d1ce3e635049c568a8770017331db057
font_01_sfnt_off000077a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77A5 1924 bytes
SHA-256: debf31eb39c417c2b53edac0755f8eadd2b3b005f7aebe66affb2edea53c2d82
font_02_sfnt_off000080dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80DC 11056 bytes
SHA-256: fa6a0eecc9eef63067bad7f63b0bc0530e33fd6ede699f2fe65b62a52892039d

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