Malicious PDF — malware analysis report

Static analysis result for SHA-256 bfadbe6cf58d1122…

MALICIOUS

PDF

92.9 KB Created: 2020-12-06 12:27:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 4d4234f38d35fd22e74e95ba4892e05a SHA-1: df22c067643580b8200af1ed18b0e77ced06deb4 SHA-256: bfadbe6cf58d11228f9d30417f825290e43db047271d87dc7dfd0e2e915ac2db
154 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. 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 0.9996

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
  • 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://gettraff.ru/123?utm_term=animal+crossing+new+leaf+guide+deutsch In PDF document text
    • https://cdn-cms.f-static.net/uploads/4383924/normal_5f9b8caa1c9da.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387931/normal_5fa474701e667.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365525/normal_5f870c56ab2a9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/lumixi/ontology_learning_for_the_semantic_web.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a8a5642-2508-4029-a827-4033717a2cff/tifexu.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc51de668612547ed794755/t/5fc8b15313f8d93bf20ae959/1606988115478/2020_primary_election_date_ohio.pdfIn PDF document text
    • https://s3.amazonaws.com/zodererezuzuxi/sodawokazijisalam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ebc4479-c001-4d8b-82f1-26243fbc973b/guitar_pro_6_keygen_reddit.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc70e0a791da6493f683ef5/t/5fcb377836758319a54f70d2/1607153529383/roblox_gift_card_redeem_codes_unused.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd0fbe1af5bf52c329cece/1606225864995/tubemesabuvufaboxu.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc7b6b35426f52a30e0c35c/t/5fc88d2bb74dd54858dbfec4/1606978859521/the_buzzer_channel.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/30613195180.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5a78927a199023ad5bcf0/t/5fc70516c7c45a5eaf9c22d7/1606878487682/33631896322.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000105c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105C8 7668 bytes
SHA-256: 9501764b48643ee1afd1bec80a26b1ced721dc3fc048976cbea6ef3eb69cba5b
font_01_sfnt_off00011fb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FB2 5400 bytes
SHA-256: 446c48693601516de9cf372272b0e26e2e50cf55eefee9544d41b2438220d871
font_02_sfnt_off000131d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x131D8 11204 bytes
SHA-256: c5d707270db7a48aa057ea71c1f354707d73a7ff9e9b2ed94a7c821406f7bfed
font_03_sfnt_off000157c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x157C8 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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