Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3eec5ec49b2aac8…

MALICIOUS

PDF

34.0 KB Created: 2021-06-17 18:28:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 22e6812827203e7e9debc8ee49e67d7d SHA-1: b7fc0fa909e93ef6f79e9ae3e303bf946a89ab61 SHA-256: d3eec5ec49b2aac8ae2fbf878bb9aa08d4e1db3307cc64a3ab349a625b9b1eff
82 Risk Score

Malware Insights

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

The document contains embedded URLs and a document body that explicitly advertises game hacks for Roblox and Coin Master, indicating a lure for malicious downloads. The presence of a 'Password-protected archive handoff' heuristic suggests the downloaded content may be encrypted to evade initial security checks. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/roblox-event-hack-game-hack PDF link annotation
    • http://library.unissula.ac.id/fe/repository/are-minecraft-realms-free_GM479516143.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/how-to-get-free-clothes-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/free-roblox-shirt-templates-2021_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/coin-master-hack-spins-game-download_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/apps-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/coin-master-free-spins-link-ios_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/google-play-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/roblox-re_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/hack-version-coin-master-apk_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/what-is-coin-master-app_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/codigos-para-hackear-cuentas-de-roblox_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/free-robux-easy-and-fast_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/free-username-and-password-in-roblox_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/coin-master-coin-link_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/coin-master-raid-hack_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/500-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/is-coin-master-free_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/free-roblox-adopt-me-pets_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/free-robux-gift-card_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002dc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DC6 22576 bytes
SHA-256: 380df00f2307563b086a86231a4a1d6542e8c48dfc719549bd99788ce995f4a9
font_01_sfnt_off0000601a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x601A 18876 bytes
SHA-256: 4c92c14aae7220a31fddf78897c7898f0eca715a0ee7faaa895bfb3bc4e25ca1

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