Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d46dea9dcac542e…

MALICIOUS

PDF

35.7 KB Created: 2021-07-05 12:13:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 27e562f401556099aa11c5423b54556b SHA-1: 8f680ac462a2a2396bf27eb8606056ce0b8a6481 SHA-256: 8d46dea9dcac542e51a998546f4705e25c001a72fc2a7a6d36fd49141d08e32c
82 Risk Score

Malware Insights

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

The PDF document contains a prominent lure related to 'free Roblox credit' and 'game hacks', directing users to a suspicious URL. This heuristic, combined with the ML classifier's high confidence, indicates a phishing or scam attempt designed to trick users into visiting a malicious site. The document body and embedded URLs reinforce this lure, suggesting the primary goal is to redirect users to potentially harmful content.

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/how-to-get-roblox-credit-for-free-game-hack PDF link annotation
    • http://library.umla.ac.id//repository/free-spin-generator-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/spin-coin-master_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/minecraft-xbox-free_GM479516143.pdfIn PDF document text
    • http://library.umla.ac.id//repository/free-minecraft-server-hosting-24-7_GM479516143.pdfIn PDF document text
    • http://library.umla.ac.id/repository/free-robux-accounts_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/robux-com-roblox_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/free-printable-roblox-images_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/free-robux-without-human-verification-generator_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/microsoft-free-robux_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/robux-generator-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/hack-coin-master-apk-mod_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/arsenal-hacks-roblox_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/coin-master-hack-2021-iphone_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/free-robux-no-verification-no-download-2021_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/free-minecraft-videos_GM479516143.pdfIn PDF document text
    • http://library.umla.ac.id//repository/how-to-get-free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/games-on-roblox-where-you-win-a-free-rixe_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/play-minecraft-online-free_GM479516143.pdfIn PDF document text
    • http://library.umla.ac.id/repository/coin-master-hack-tool-generator_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/how-to-generate-free-robux-hacks_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_off00003291.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3291 23164 bytes
SHA-256: 45ba5722fa52de1087836a5d2ecfe71a609675d5c37e8ee9ed6eb41f16bfb63c
font_01_sfnt_off00006629.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6629 19212 bytes
SHA-256: 6fa99d77eabed09a15600f46206c06344a6246eb44710121d4e1b5c839b79c19

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