Malicious PDF — malware analysis report

Static analysis result for SHA-256 05d775f882bee5f5…

MALICIOUS

PDF

35.8 KB Created: 2021-07-05 23:33:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 317c7d05e764def554a5a6029a53e65e SHA-1: 299689e2f1f57af2202b1a712a460928009dfd95 SHA-256: 05d775f882bee5f59680a1e72e9c3d5cf5924508e15fef10b412f8ddc61473cf
82 Risk Score

Malware Insights

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

The PDF document contains a lure related to game hacks and promo codes, directing users to a suspicious URL. The ML classifier strongly flagged this PDF as malicious, and heuristic rules identified external URI links associated with game hack lures. The document's content and linked URLs suggest a phishing or scam attempt to redirect users to potentially harmful websites.

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/rbx-hut-promo-codes-game-hack PDF link annotation
    • http://library.stiks-tarakanita.ac.id/repository/get-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/coins-master-hack_GM406889139.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/new-roblox-logo-gives-free-robux_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/how-to-get-free-robux-no-videos_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/hacks-for-cb-roblox_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/roblox-hack-init_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/free-roblox-torso_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/coin-master-hack-apk-2021-ios_GM406889139.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/hack-robux-computer_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/free-adopt-me-promo-codes-roblox_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/is-free-robux-real_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/roblox-hack-iphone_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/free-roblox-pickaxes_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/roblox-free-shirts-and-pants-catalog_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/are-there-secret-ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/daily-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/is-coin-master-hacks-safe_GM406889139.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/how-do-you-get-free-robux-in-roblox-2021_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/free-pokemon-roblox-games_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_off000032a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32A4 22960 bytes
SHA-256: e320bc32e1637915ba948d144d406ee1d806b9f76ffae6566a9e277877402fc2
font_01_sfnt_off00006636.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6636 19244 bytes
SHA-256: 782a737def693689e4b5665cffc47cc258515f3f674248a8a55cde411c40cafc

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