Malicious PDF — malware analysis report

Static analysis result for SHA-256 d50dce0effe75a7a…

MALICIOUS

PDF

79.8 KB Created: 2020-12-05 20:43:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 7862a9fbe28e3e01597fa8731e3d65a0 SHA-1: 1c56ce9bdd6b6d41fa8cc434c373aee6c99da8c4 SHA-256: d50dce0effe75a7a189eb25f7afa3710a85f3280bdc8f64fa094aed4ce536a68
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is classified as malicious by ML and ClamAV, indicating a high likelihood of malicious intent. An external URI pointing to 'trafffe.ru' was extracted, suggesting a phishing or malware distribution attempt. The PDF structure and embedded content, though obfuscated, are consistent with malicious documents designed to trick users into visiting harmful links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafffe.ru/strik?utm_term=apk+sprinkle+islands PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4458145/normal_5fafa1df7446a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380890/normal_5f9d01a766c56.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369187/normal_5fb32bb6927c2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374715/normal_5faa34c8a78b9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393041/normal_5f9c23572187f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371020/normal_5f89a8daae5aa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488570/normal_5faacb31cf7ea.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366637/normal_5f8f6d1f6687b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc5cbbe104edf1d77a2c1c8/t/5fc9e6912ae1264a03953767/1607067282033/doom_movie_2005_download_indoxxi.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcf9138cb11b25c09baac2/1606220053376/bosch_plunge_router_kit.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf66b2f8cdb769c6db0904/1606379187704/16364784104.pdfIn PDF document text
    • https://s3.amazonaws.com/dapekufoxiraku/responsibility_accountability_consulted_and_informed_raci_matrix.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf4a1a145a8629dca719ca/1606371867839/93308187073.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_off0000e669.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE669 2888 bytes
SHA-256: 79c123580f427228b43a56b1cf0aadb076655afb45558165fd63ebba8ae95b88
font_01_sfnt_off0000f0ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0AC 5004 bytes
SHA-256: a6ac074b26aadbb25310b8bc53c773e0851e40e92cbeb44c2f89cf9ad6a0099d
font_02_sfnt_off000101bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101BC 15340 bytes
SHA-256: 13ed62aca47a988c6145a1ec6cdebab8ebc98dcd82daa63b98194217c4708152

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