Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa472cfe0ca7507c…

MALICIOUS

PDF

50.9 KB Created: 2021-06-03 08:55:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 88336495a92b09f6880623a9dd25f415 SHA-1: 579f50f9674edf1babc3c8a213bbc76328465988 SHA-256: aa472cfe0ca7507cc16bd4fa7d2d68354e1a0dff5868ab1cfa24f0a3f35db495
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for a "game hack" which redirects to a malicious URL. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it is designed to redirect users to potentially harmful content, likely for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9744

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/431946152/roblox-hack-com-game-hack PDF link annotation
    • http://library.apsidoarjo.ac.id/repository/info-roblox-com-robux_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/todays-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/cheats-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/coin-master-pet-food-free_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/hack-coin-master-apk-2021_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/how-to-get-free-hair-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/cool-free-minecraft-skins_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-tiktok-likes-and-followers_GM835599320.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/apps-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/blogger-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/hack-xp-net-coin-master_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/how-to-get-free-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/coin-master-gold-cards-free_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/coin-master-server-hack_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-robux-generator-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/coin-master-hack-extension_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/coin-master-mod-version-free-download-v344_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/minecraft_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/coin-master-link-for-spins_GM406889139.pdfIn PDF document text
    • http://wolfzscriptsIn 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_off00005192.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5192 33348 bytes
SHA-256: b8140312586352bbab3d5b1b32498a0eabedb76f0743ba723f4d417030d7f4e9
font_01_sfnt_off00009a0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A0C 2832 bytes
SHA-256: 78e89c8f621d90011ffb7a2107d701d4cdf090a2f2cf42d5a65297289afc8805
font_02_sfnt_off0000a3bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA3BD 18440 bytes
SHA-256: 92e56247950081f5f8ea935637ec6d93dafa31aa334148af106ab9a8365bd2e0

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