Malicious PDF — malware analysis report

Static analysis result for SHA-256 63320e46f68bf293…

MALICIOUS

PDF

35.2 KB Created: 2021-07-01 20:07:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: f102736942e93b845e8a65b59f0aedc3 SHA-1: d895ca0bfdd7d4300403e6bfd3cc954fbebc696c SHA-256: 63320e46f68bf293d645de3d0f7b4e611b3a855ce33bb554d42b58cf5969bef7
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one to 'netcdn.co', which is flagged as a lure for game hacks and free spins. The document body explicitly mentions offers for Coin Master and includes numerous URLs related to game cheats and currency. No scripts were extracted, but the presence of embedded URLs and the 'PDF_GAME_HACK_REDIRECT_LURE' heuristic strongly suggest a phishing or scam attempt to redirect users to malicious 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.co/app/406889139/offers-to-get-free-spins-in-coin-master-game-hack PDF link annotation
    • http://e-learning.mapuicijantung.sch.id/__statics/gudangsoal/files/buy-robux-free_GM431946152.pdfIn PDF document text
    • http://e-learning.mapuicijantung.sch.id/__statics/gudangsoal/files/roblox-group-free-robux_GM431946152.pdfIn PDF document text
    • http://e-learning.mapuicijantung.sch.id/__statics/gudangsoal/files/rbx-robux_GM431946152.pdfIn PDF document text
    • http://e-learning.mapuicijantung.sch.id/__statics/gudangsoal/files/bloxland-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://e-learning.mapuicijantung.sch.id/__statics/gudangsoal/files/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://e-learning.mapuicijantung.sch.id/__statics/gudangsoal/files/coin-master-heaven-free-spins-link_GM406889139.pdfIn PDF document text
    • http://e-learning.mapuicijantung.sch.id/__statics/gudangsoal/files/coin-master-20-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://e-learning.mapuicijantung.sch.id/__statics/gudangsoal/files/hackear-juego-coin-master-espaol_GM406889139.pdfIn PDF document text
    • http://e-learning.mapuicijantung.sch.id/__statics/gudangsoal/files/free-promo-codes-roblox_GM431946152.pdfIn PDF document text
    • http://e-learning.mapuicijantung.sch.id/__statics/gudangsoal/files/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • http://e-learning.mapuicijantung.sch.id/__statics/gudangsoal/files/coin-master-hack-apk-ios_GM406889139.pdfIn PDF document text
    • http://e-learning.mapuicijantung.sch.id/__statics/gudangsoal/files/earn-free-robux-for-roblox_GM431946152.pdfIn PDF document text
    • http://e-learning.mapuicijantung.sch.id/__statics/gudangsoal/files/minecraft-bedrock-edition-pc-free_GM479516143.pdfIn PDF document text
    • http://e-learning.mapuicijantung.sch.id/__statics/gudangsoal/files/minecraft-images-free_GM479516143.pdfIn PDF document text
    • http://e-learning.mapuicijantung.sch.id/__statics/gudangsoal/files/bad-minecraft-free_GM479516143.pdfIn PDF document text
    • http://e-learning.mapuicijantung.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-for-free-on-xbox-one_GM479516143.pdfIn PDF document text
    • http://e-learning.mapuicijantung.sch.id/__statics/gudangsoal/files/how-to-get-100-robux-for-free_GM431946152.pdfIn PDF document text
    • http://e-learning.mapuicijantung.sch.id/__statics/gudangsoal/files/daily-free-spin-coin-master-link_GM406889139.pdfIn PDF document text
    • http://e-learning.mapuicijantung.sch.id/__statics/gudangsoal/files/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • http://e-learning.mapuicijantung.sch.id/__statics/gudangsoal/files/free-robux-com_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_off00003364.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3364 23164 bytes
SHA-256: aa5bd64d6638524454af520353de24709a6fe8cbf0d31b447138bf6bbf55889c
font_01_sfnt_off0000676b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x676B 18176 bytes
SHA-256: a5dda6ecc9550c88ef854abac2de0c7419869471da9a3b20b0ae64a03b2462f9

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