Malicious PDF — malware analysis report

Static analysis result for SHA-256 072b97fda13734b3…

MALICIOUS

PDF

34.8 KB Created: 2021-07-05 18:10:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: ae52c6972d37a495f73da076b6e0a996 SHA-1: 8f0574579c4c01eaec0fe4ed07b231a031dee19a SHA-256: 072b97fda13734b36d7d7eb693aaa518e598c804dc9840837d95cb28841c752d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to game hacks, specifically for Roblox, directing users to a suspicious URL. The ML classifier strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lure suggest an attempt to redirect the user to a malicious site, likely for further exploitation or malware delivery.

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/hacks-for-roblox-prison-life-game-hack PDF link annotation
    • http://library.yamasi.ac.id/repository/cool-kids-hacks-roblox_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-robux-generator-download_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-spins-on-coin-master-link_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/the-best-free-roblox-shirt_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/how-to-get-free-roblox-game-passes-not-patched_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/cheat-buddy-roblox-esp_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/game-give-free-robux_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/grab-robux-for-free_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-robux-safe_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-robux-generator-2021-no-download_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox-hack-apk_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/is-free-robux-real_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-days-dino-sim-roblox_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/roblox-script-executor-free_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/robux-spin-wheel-free_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/coin-master-free-spins-and-free-coins_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/roblox-no-download-hack_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/coin-master-hack-without-verification-site-zyngaplayerforumscom_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/how-to-create-a-minecraft-server-for-free_GM479516143.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_off00003077.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3077 22600 bytes
SHA-256: 7c8f584fa66ef0cc7a4c66f4d573c8631e90844d58e331eb8c8e957a23c143d2
font_01_sfnt_off000062f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62F4 19092 bytes
SHA-256: ef89b1d271636e764f722043ec5d09a3a98c04342f5f95fe8e2d5526ed958172

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