Malicious PDF — malware analysis report

Static analysis result for SHA-256 104e9d4e0c299414…

MALICIOUS

PDF

33.6 KB Created: 2021-07-06 08:21:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 365587690a800c8cbfd5e046aef9cd1a SHA-1: 7e64bb800629feb02889e893ec30c42e570658f1 SHA-256: 104e9d4e0c29941418bf4160643c12f2dc33110910e20643dc09036b18ddba69
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • 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.tw/app/431946152/roblox-hack-me-robux-game-hack PDF link annotation
    • http://perpus.wdh.ac.id/repository/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/robux-free-for-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/weird-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/minecraft-mojang-free_GM479516143.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/roblox-cheat-engine-scripts_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/claimrbx-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/how-to-hack-a-roblox-account-easy_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/roblox-google-chrome-robux-hack_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/how-to-play-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/all-links-for-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/vehicle-simulator-roblox-speed-hack_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/roblox-bloxburg-free-play_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/coin-master-gold-cards-free-2021_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/free-roblox-generator_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/minecraft-clipart-free_GM479516143.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/legit-coin-master-hack-site-zyngaplayerforumscom_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/descargar-hack-para-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/wings-free-in-roblox_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_off00002cae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CAE 22280 bytes
SHA-256: 3b89e5f7d28cc6b508e3d62aba11e18c07f1bd907992f08031104995bcb9b35c
font_01_sfnt_off00005e47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E47 18992 bytes
SHA-256: 86b86f91b54ee921683d76bd91845474e74a2f02ddd9d950759e972449d3ecfc

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