Malicious PDF — malware analysis report

Static analysis result for SHA-256 94b0301adff41c2c…

MALICIOUS

PDF

69.1 KB Created: 2020-11-08 02:57:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 976feb7f2ca14a8a2be4652c38d47b01 SHA-1: d867cbee4b750ed9d93cfa686155f626c943da1f SHA-256: 94b0301adff41c2c8735bcbee8266af4f4141e926fb5c08ac06c61cf79c59bce
96 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 embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://traffking.ru/aws?keyword=black+jack+randall+actor PDF link annotation
    • https://gorigopaf.weebly.com/uploads/1/3/4/3/134341526/gezidowomakugi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369665/normal_5f895265dc1a9.pdfIn PDF document text
    • https://sogenaluvejor.weebly.com/uploads/1/3/4/3/134328850/069e155ef6868c4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402949/normal_5f94aa9085e90.pdfIn PDF document text
    • https://zowupenejanelaw.weebly.com/uploads/1/3/4/3/134397621/e4eaa83.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402722/normal_5fa02086c0e7d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409607/normal_5fa6c948aad24.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/liwafo/the_originals_book_series_order.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e397590f-0906-4ebe-84c4-5ca492c3b586/free_monte_carlo_simulation_excel_add-in.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/174f22c6-79af-4624-8433-5d31ac2e367f/tazipurupumijal.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/basic_concepts_of_inorganic_chemistry_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/279d609e-2ca6-47f2-af59-146f131d1380/dafiboz.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_off0000cf8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF8C 4944 bytes
SHA-256: e8130473a1d3d3dccb5d78e9aca07d4d650a938dec37bcfa61a22613826845e9
font_01_sfnt_off0000e071.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE071 11916 bytes
SHA-256: 530fc3bd29562bf5e42478837c6a4a9dc6f0caf2abd05f9731b79421df0ffa18