Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe6444178dd8e199…

MALICIOUS

PDF

52.4 KB Created: 2021-06-07 12:29:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 26edca745a2f599bb5ac56f52f262368 SHA-1: 64b7222fbfb1f1b31f615ecce9ecb9f003e339b4 SHA-256: fe6444178dd8e19986d779a4a739cb0c211dba558a51e87e140b70f9dfbf9cda
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. It uses a fake-CAPTCHA lure. 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 0.9586

Heuristics 5

  • 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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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/get-free-robux-legally-game-hack PDF link annotation
    • http://stikgiamakassar.ac.id/digilib/repository/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/can-i-play-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/coin-master-pc-hack_GM406889139.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/daily-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/how-to-download-minecraft-for-free-on-mac_GM479516143.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/minecraft-thumbnail-maker-free_GM479516143.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/coin-master-daily-free-spins-haktuts_GM406889139.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/coin-master-hack-unlimited-spins-apk_GM406889139.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/hackear-coin-master-sin-root_GM406889139.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/coin-master-free-spins-app-for-iphone_GM406889139.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/mcpe-master-hack-unlimited-coins-apk_GM406889139.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/free-robux-site_GM431946152.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/minecraft-alt-accounts-free_GM479516143.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/microsoft-store-robux_GM431946152.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/free-roblox_GM431946152.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/bloxpink-free-robux_GM431946152.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/sites-for-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/how-to-get-free-hair-on-roblox_GM431946152.pdfIn PDF document text
    • http://stikgiamakassar.ac.id/digilib/repository/how-to-hack-peoples-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005316.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5316 25408 bytes
SHA-256: 37a1137695901ec71420c061204c4593f1ce193341b220f351ae0b0d1b4f0a38
font_01_sfnt_off00008d93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D93 8132 bytes
SHA-256: e6d68e720ea5acf9dccbf7ffde18db6f65c62a99ab7725aa43e30329033a7787
font_02_sfnt_off0000a880.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA880 18888 bytes
SHA-256: eb63567cd393f437cb7e4c7af7d1b576eb4d2979dc8d34398b3f3caf76343e35

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