Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e5eb3318156ca29…

MALICIOUS

PDF

84.2 KB Created: 2020-12-22 11:57:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: e060ff0d3a1bcc59e291825f21ec3966 SHA-1: b2192b944b62b3fb8ff4a4ca35b77946775be579 SHA-256: 0e5eb3318156ca293fc962f6aa7880e47827e84f2d8dd3d86a0bd11ca654e490
162 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses an urgency-based lure. 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 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://traffmen.ru/123?utm_term=535d+cat+skidder In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365542/normal_5f9a583fb1b52.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/5fcdeb3d5895864d89530aca/t/5fd209df87bef85997f47896/1607600607847/74195661858.pdfIn PDF document text
    • https://s3.amazonaws.com/davolazupivowi/youth_development_index_report_2017.pdfIn PDF document text
    • https://s3.amazonaws.com/voxulija/33158962464.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1858bf7cf8c75402f5531/t/5fcf4c2b05f6f2780756ecfe/1607420977691/lexia_reading_core5_level_9.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagobomap/scheppach_basato_3_blade_guides.pdfIn PDF document text
    • https://s3.amazonaws.com/robumuduluwise/wuwatijafusetafuxuropufur.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6de9104d-0121-4463-8767-2bf50e1864e7/dofitupipabi.pdfIn PDF document text
    • https://s3.amazonaws.com/fatikonavori/abhiman_bengali_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/juliziwojatige/information_about_computer_software_engineering.pdfIn PDF document text
    • https://s3.amazonaws.com/loxopudizus/pdf_a5_page_size.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcfc102c6de34c7a38e13c/1606220816486/vaketidip.pdfIn PDF document text
    • https://s3.amazonaws.com/jivamubug/online_movie_ticket_booking_template_free.pdfIn PDF document text
    • https://s3.amazonaws.com/fidefofudi/91010026242.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_off0001040f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1040F 5156 bytes
SHA-256: 3e92d495dec71c509975739558b246a3b5aa917878fe84fcbe1e159286b7463b
font_01_sfnt_off000115a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115A9 14972 bytes
SHA-256: c449c3d9471bad64dc35374e4ab9ca72607987512aeda50af4064635eeb79c61

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