Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd0356fe615e753b…

MALICIOUS

PDF

69.0 KB Created: 2020-12-22 03:09:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: eb528cdbc5f87c1ddb5b49ff751f0b43 SHA-1: 9a805f7253789c7ab7ba6dfe924ffa56c316fdf4 SHA-256: dd0356fe615e753bab5989ed8b5f8404aa3bb6fbf933c57ee7da3434c1fc1e43
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to trick users into visiting a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/aws?utm_term=aprender+espa%25C3%25B1ol+pdf+gratis PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4412584/normal_5fa7abd2a7717.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412774/normal_5fe07bafcbcb8.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/kefiperizonofu/beekeeping_for_beginners_listening_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/lorugipopuxe/simple_window_grill_design_catalogue.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de175158-5242-480f-b86b-590250fde1f5/hidden_hollow_elementary_phone_number.pdfIn PDF document text
    • https://s3.amazonaws.com/fatisake/sujabubipavujavejewijalu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/359dfa84-87c9-41a9-9e38-4801fe0fff8b/carte_uno_a_imprimer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bdf7e5b8-b6e7-48b4-92b6-602f6c8fff1b/89461579100.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c8b418d-8e16-4c67-8bcb-51bc926c50cf/18252534031.pdfIn PDF document text
    • https://s3.amazonaws.com/wamatasamegu/larujitafuxibozuxemewomo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/36d06e66-02b9-42e5-86a2-8bd44a323840/lipoma_removal_surgery_covered_by_insurance.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe2e1d48-9bf4-466e-840e-3d05a58df41d/clinica_dental_adeslas_malaga_teatin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f045d9f-7f54-4482-9ba7-9c348d52c2fe/66920416520.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_off0000c289.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC289 5408 bytes
SHA-256: bcf5ee4b240d66e29c5e2df05cc21320893407f2d03e255c282a8afee57108ce
font_01_sfnt_off0000d4b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4B6 2664 bytes
SHA-256: d8c92d379c7b8a1959ee35163e2a462ef06e633b0bd55ebeea83a9ee1ea23089
font_02_sfnt_off0000e007.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE007 11400 bytes
SHA-256: 119b3d42885fe8cd53e1394a46633e2ddd9e01f074c207db60ee37fc2267e003

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