Malicious PDF — malware analysis report

Static analysis result for SHA-256 33f4741ebbcbeaa9…

MALICIOUS

PDF

47.1 KB Created: 2021-06-03 10:41:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 539e8bee47c72b32d2c28f4a70ddf4b6 SHA-1: 39f69e6ea4f549a6dd23cfed71339b7aa4a79a95 SHA-256: 33f4741ebbcbeaa9b88c06ec65e0246579f765fcd0883006c776a458a70db68b
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to 'free Robux' and game hacks, directing users to a malicious URL. The ML classifier strongly flagged this PDF as malicious. The embedded URLs are indicative of a phishing or scam attempt designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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/free-robux-codes-game-hack PDF link annotation
    • http://library.persadabunda.ac.id/repository/how-to-make-my-own-coin-master-cards-hack_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/free-robux-gift-card-generator_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/coin-master-free-gift-link-2021_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/cute-free-roblox-outfits_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/coin-master-hack-com_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/coin-master-free-spin-ml_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/mobihack-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/roblox-free-robux-website_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/free-coin-master-hacks-no-verification_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/free-tiktok-likes_GM835599320.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/coin-master-3rd-village-free-2021-gift-card_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/static-moonactive-net-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/www-robux-redeem_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/free-draw-roblox_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/earn-robux-online_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/roblox-verification_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/link-coin-master_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/coin-master-free-spins-and-coins_GM406889139.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
stream_004_off00004f5b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F5B 24968 bytes
SHA-256: b1c3d979d0dcd472f08c4624ebed6f9a76b8921b99a4424da5e20840d8957995
font_01_sfnt_off00008905.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8905 3608 bytes
SHA-256: 38b270e1156baf55f52eefd6c0272d25f41d6b4ef7b6a9aa3301989c4dacee27
font_02_sfnt_off0000958d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x958D 18188 bytes
SHA-256: 7763b0eba74f003993d6ddc379ef756dfeeff7cedd1b34d70c41f8674d393ab3

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