Malicious PDF — malware analysis report

Static analysis result for SHA-256 62cd57f5bb01b912…

MALICIOUS

PDF

50.2 KB Created: 2020-11-02 03:56:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: ce95e2df102440a893a51a6d0fd2b97d SHA-1: 206fc3e073e8eb7d49ff5544b20a7972d820af25 SHA-256: 62cd57f5bb01b9127f6caf887c79e048e48931858e01cb7259ec0d3a1cec1f9c
94 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by 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 1.0000

Heuristics 3

  • 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://cctraff.ru/123?keyword=showbox+apk+download+2019+fire+tablet In PDF document text
    • https://dexatasudawuge.weebly.com/uploads/1/3/4/4/134477966/bukatezusuzogosizaf.pdfIn PDF document text
    • https://letolonenuxe.weebly.com/uploads/1/3/4/0/134095956/0249470.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/80404e49-7898-4734-8d97-2f875079bbe9/gojotinokerakuwi.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/best_reader_for_ipad_2.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c11ba73-e57c-4f9d-bd97-4335b08d1d0d/76986964849.pdfIn PDF document text
    • https://s3.amazonaws.com/figugipopar/31702887733.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d2130ec-f5f7-49f2-96fa-bd0908e1ecb4/67217779475.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/financial_statement_analysis_project_report_mba.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b8c840e-7ebe-4415-92a1-8fea30aaab6d/3817926091.pdfIn PDF document text
    • https://s3.amazonaws.com/sivanira/download_roblox_apk_mode.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c75443b-c817-4060-95ba-a814b7111bae/best_armor_dragon_age_inquisition.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/manual_aceites_esenciales.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/7283/7550/files/mefavudige.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_off00008348.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8348 5900 bytes
SHA-256: e0c4472bcc650f2d0af2b50b9065803f670e6737a8b6f8260d248caed3d61ee4
font_01_sfnt_off0000976f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x976F 10812 bytes
SHA-256: 561e618601e2c2abe03d9c9301319f5d1c182791050267009795568db3f90c4f