Malicious PDF — malware analysis report

Static analysis result for SHA-256 526c1527653d8244…

MALICIOUS

PDF

43.3 KB Created: 2021-05-17 00:58:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 1f78f8f3f9f27d138e6289f943e0116e SHA-1: 8ced7c2723794bc5c9abfd0a42b0cfcac857d854 SHA-256: 526c1527653d8244604dd3271239f6fae624bd36412be8b6a9b6abb9ff0f5d6b
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains multiple embedded URLs and a primary external URI pointing to a site offering game-related hacks. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' suggests the document may be part of a multi-stage attack, potentially disguising a payload within an encrypted archive. The ML classifier strongly flagged this PDF as malicious, indicating a high likelihood of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

Heuristics 4

  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://netcdn.xyz/app/431946152/robux-claimer-game-hack PDF link annotation
    • http://fmbompastor.com.br/images/coin-master-free-coins-and-spins-daily-summary_GM406889139.pdfIn PDF document text
    • http://fmbompastor.com.br/images/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://fmbompastor.com.br/images/how-to-hack-any-roblox-account_GM431946152.pdfIn PDF document text
    • http://fmbompastor.com.br/images/free-roblox-clothes-boy_GM431946152.pdfIn PDF document text
    • http://fmbompastor.com.br/images/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://fmbompastor.com.br/images/coin-master-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • http://fmbompastor.com.br/images/how-many-villages-are-in-coin-master_GM406889139.pdfIn PDF document text
    • http://fmbompastor.com.br/images/coin-master-free-spins-hack-iphone_GM406889139.pdfIn PDF document text
    • http://fmbompastor.com.br/images/hack-coin-master-online_GM406889139.pdfIn PDF document text
    • http://fmbompastor.com.br/images/free-coin-master-game_GM406889139.pdfIn PDF document text
    • http://fmbompastor.com.br/images/minecraft-cheat-client_GM479516143.pdfIn PDF document text
    • http://fmbompastor.com.br/images/get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://fmbompastor.com.br/images/how-to-earn-free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://fmbompastor.com.br/images/coin-master-game-hack-version-download_GM406889139.pdfIn PDF document text
    • http://fmbompastor.com.br/images/coin-master-exchange-40-free-spins_GM406889139.pdfIn PDF document text
    • http://fmbompastor.com.br/images/free-vpn-for-minecraft_GM479516143.pdfIn PDF document text
    • http://fmbompastor.com.br/images/how-to-get-minecraft-realms-for-free_GM479516143.pdfIn PDF document text
    • http://fmbompastor.com.br/images/robux-download_GM431946152.pdfIn PDF document text
    • http://fmbompastor.com.br/images/how-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://fmbompastor.com.br/images/minecraft-bedrock-free-download-pc_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004952.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4952 26072 bytes
SHA-256: dbc63d53d9de9b0cea3fd6c84baa6f31adfb8228fb9d95892d733dc4cdb0062d
font_01_sfnt_off00008665.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8665 18532 bytes
SHA-256: f8d3cbf6c99adbc4a00682e2952441b72e35b63b7e0e02c452fe01b9b955693e

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