Malicious PDF — malware analysis report

Static analysis result for SHA-256 23b0e01e0dd064ac…

MALICIOUS

PDF

69.1 KB Created: 2020-12-22 05:47:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 99b04ef742b82c219ee29fdd5cc70468 SHA-1: 978fe103cbeda1c6d51269e8ea55e10daabdc424 SHA-256: 23b0e01e0dd064ac806f3d14a76d4a04f4a7b3973a32846309f383ebd5f99399
96 Risk Score

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 embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafftec.ru/123?utm_term=depth+meter+terraria+ios PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4381094/normal_5fa4072519d08.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389604/normal_5f9ca5635a9c6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491414/normal_5fde855935450.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371807/normal_5f898b27232e2.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/xazarujokemus/high_school_music_theory_curriculum.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5bf69405d5340f34aeaaa/t/5fd1a9eace71ee580fa83b6a/1607576043862/37528613846.pdfIn PDF document text
    • https://s3.amazonaws.com/zabejuvijolu/hyrule_warriors_definitive_edition_guide_book.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5b620bd14ff0dd2bd8369/t/5fcefcddcd9a2056ff6c3032/1607400672721/all_maze_runner_books_in_order.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be5a7810-f3fb-4233-a6c2-6f9488c02c48/87862392776.pdfIn PDF document text
    • https://s3.amazonaws.com/sizabo/libro_sobre_el_cerebro_humano.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_off0000d0dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0DD 5028 bytes
SHA-256: b2741b5f312b84ba70bbe7f39ac65ebd896cbd9f9b643e0b256965d75ce12ef2
font_01_sfnt_off0000e1c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1C7 11264 bytes
SHA-256: 5a778da9336326041c86570603116c060cc8b60ba255264e4da37f9bd949e43e