Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f44930e7733709a…

MALICIOUS

PDF

44.5 KB Created: 2021-06-04 04:29:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 03256af3b2c9f92f3f8f1508c106b9a6 SHA-1: 27ac66cbb7e466857d73525a3036b00dc8dc323a SHA-256: 5f44930e7733709a70e96b9aacbcfcc9a473c432e24b52ca09b3ae6dcaa05e1a
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites, disguised as generators or hacks for popular games like Minecraft and Roblox. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' strongly indicates a deceptive lure. While no scripts were explicitly extracted, the presence of embedded URLs and the ML classifier's high confidence suggest the document is designed to redirect users to malicious sites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.online/app/479516143/minecraft-pocket-edition-mods-for-free-game-hack PDF link annotation
    • http://www.elibrary.perludem.org/repository/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/hack-coin-master-dzooka_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-spins-coin-master-blogspot_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-tiktok-views_GM835599320.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/how-to-get-roblox-credit-for-free_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/robux-free-2021_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/coin-master-hack-no-verification-no-signup_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/good-free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/fb-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-tiktok-bots_GM835599320.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/coin-master-spin-rewards_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/pubg-uc-pakistan_GM1330123889.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/coin-master-hack-pro-gamers_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/appsmob-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/how-to-hack-coin-master-using-es-file_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/client-minecraft_GM479516143.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/coin-master-free-spins-fb_GM406889139.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_off000055a3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x55A3 23792 bytes
SHA-256: ff1ccbd97edb1629791488d260559d1d96c4a9feeb6bfa1e9b23b9baf51b4a40
font_01_sfnt_off00008bb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BB3 18208 bytes
SHA-256: 52725ebef45a42bab5f52f4296d4c65b292dd882fbab5616e23215bf8ac92a4c

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