Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c9a228149876d79…

MALICIOUS

PDF

71.5 KB Created: 2020-12-14 22:48:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: c207ad063afd29bc5e211c9a35cc455f SHA-1: 13fcd9137091e0325a8aba17fde453bf31da4722 SHA-256: 9c9a228149876d796f72f950269ac7c9257eba91c4ce53e74561e56fca985fcc
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 0.9998

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
  • 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://ggtraff.ru/aws?utm_term=anbe+sivam+video+songs++masstamilan In PDF document text
    • https://cdn-cms.f-static.net/uploads/4445324/normal_5fb8e99b84140.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387817/normal_5faec8b8a0538.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383467/normal_5fad94e4abed1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460055/normal_5fc53d31163f6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379626/normal_5fa8994cc8d32.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/baxunaf/772696803.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd851c12-8e32-4af5-b0c9-d3317a2f6e8f/key_to_ravenhearst_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/tutapaxi/9739844583.pdfIn PDF document text
    • https://s3.amazonaws.com/zabevog/98675649805.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c458463b-f802-4912-88bc-0b2ef923b71d/20660043301.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc115bd5e8e827d428ee316/t/5fc1c9294f9837572022007b/1606535466365/wikokeg.pdfIn PDF document text
    • https://s3.amazonaws.com/warapagefasovi/jizafutiduv.pdfIn PDF document text
    • https://s3.amazonaws.com/neviwove/premiere_pro_cc_free_templates.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1129368612547ed5f20ea/t/5fc1b8f63570fb44d1432e76/1606531319309/punnett_square_review_games.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_off0000baca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBACA 9860 bytes
SHA-256: 66450f13b9f5496c21a251ebd323771d91b8f8b75c15fcb36ff6376089381b8b
font_01_sfnt_off0000d9e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9E5 5240 bytes
SHA-256: b9aadf6b69428959129a71fd659a2d9c7297b8a7806973e74612acadf84cc43e
font_02_sfnt_off0000ebae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBAE 10836 bytes
SHA-256: 3906118d145e216d51bdd21fe0340024d57868e64611a604d8f3b27633c28ca2

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