Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed04774130d5aa35…

MALICIOUS

PDF

46.0 KB Created: 2021-06-09 14:01:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: fd1f49e89b05481f141a8540166bc1e1 SHA-1: 18ba779af2470e940d1aa4351250f3348f34830d SHA-256: ed04774130d5aa353baa6a198424e9a5fb458c4f7b591cbe30c9ac9eb4c8ff6e
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 0.9864

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 https://netcdn.tw/app/431946152/roblox-hacker-c00lkidd-game-hack PDF link annotation
    • http://pustaka.fhuk.unand.ac.id/repository/minecraft-life-hacks_GM479516143.pdfIn PDF document text
    • http://pustaka.fhuk.unand.ac.id/repository/dexen-hack-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fhuk.unand.ac.id/repository/free-roblox-explot_GM431946152.pdfIn PDF document text
    • http://pustaka.fhuk.unand.ac.id/repository/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://pustaka.fhuk.unand.ac.id/repository/free-robux-tutorial-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.fhuk.unand.ac.id/repository/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.fhuk.unand.ac.id/repository/free-robux-in-roblox-pc_GM431946152.pdfIn PDF document text
    • http://pustaka.fhuk.unand.ac.id/repository/roblox-free-clothes-codes_GM431946152.pdfIn PDF document text
    • http://pustaka.fhuk.unand.ac.id/repository/free-coin-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.fhuk.unand.ac.id/repository/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.fhuk.unand.ac.id/repository/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fhuk.unand.ac.id/repository/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.fhuk.unand.ac.id/repository/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://pustaka.fhuk.unand.ac.id/repository/free-robux-picture_GM431946152.pdfIn PDF document text
    • http://pustaka.fhuk.unand.ac.id/repository/minecraft-java-edition-redeem-code-free-2021_GM479516143.pdfIn PDF document text
    • http://pustaka.fhuk.unand.ac.id/repository/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.fhuk.unand.ac.id/repository/coin-master-free-spin-and-coins-links_GM406889139.pdfIn PDF document text
    • http://pustaka.fhuk.unand.ac.id/repository/best-free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://pustaka.fhuk.unand.ac.id/repository/free-good-groups-to-claim-in-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fhuk.unand.ac.id/repository/roblox-promo-codes-free-robux_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
stream_004_off000051bf.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51BF 27168 bytes
SHA-256: b555e4cd42b7d77f875fd215a4f06d44957125ba538e4d2f82fafb1b90b8708b
font_01_sfnt_off00009010.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9010 18648 bytes
SHA-256: 7d79e7bb8c04c6fb9c26805eb66fd0f892c1154b22972e0d9c727b7e20161394

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