Malicious PDF — malware analysis report

Static analysis result for SHA-256 0cea242e03e6c233…

MALICIOUS

PDF

34.4 KB Created: 2020-11-09 13:19:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 380a7eaba1352e7db6ae225fdec5e83d SHA-1: 2f607d52d7e0482faa58861c0296e1b7cae16006 SHA-256: 0cea242e03e6c233fbef0970d8e52e5103edfb2c6f7013b1c2ec2f68a728513d
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/aws?keyword=sabattus+maine+oak+hill+middle+school+fair In PDF document text
    • https://bubixoduxufito.weebly.com/uploads/1/3/1/0/131070588/wigugu.pdfIn PDF document text
    • https://tipiridevozono.weebly.com/uploads/1/3/4/3/134349557/rozupirenapaja.pdfIn PDF document text
    • https://satatemusuk.weebly.com/uploads/1/3/4/3/134311800/laloxorusuruj-sozixi.pdfIn PDF document text
    • https://dexetejitifite.weebly.com/uploads/1/3/4/5/134576896/josojoxaf.pdfIn PDF document text
    • https://gonerogad.weebly.com/uploads/1/3/1/4/131438616/2918a3f088f4.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/cc17b0b5-bdc4-40cb-8f6d-654b688a847d/what_is_forensic_argument.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4056d7f5-23ce-45cc-a09a-5a3e9e1b64c9/65029622254.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8916ed8d-c60d-4dd3-8ddf-7c26b5aea5da/76083642140.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63a52bf3-46aa-4968-910c-118dfcb5a660/88875620890.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c5eb4206-a085-4109-b3af-09e9aa6a28ed/libros_de_brujeria_gratis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08cf187c-5b60-4ff7-bc53-1d55830feb93/10329255317.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b36a12f1-a367-4221-ae41-7465194c0d92/pigudubo.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_off00004699.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4699 5568 bytes
SHA-256: 6d7d8883fe2c728c0ccdb5d7838da64f45cf9ec35026ce1dbb0b8a7e0c556d10
font_01_sfnt_off0000595c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x595C 10300 bytes
SHA-256: 1088ab5c399e994ca9c7423220ef274adc69d8dc8658b57c489a405a039adade