Malicious PDF — malware analysis report

Static analysis result for SHA-256 928baf458d56ef1a…

MALICIOUS

PDF

42.2 KB Created: 2021-05-17 07:10:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 2cd495bc643b3aecde7ed0f3bbce2a0f SHA-1: 61ff7a82d0acebb2ea06732b1df73b2a84601513 SHA-256: 928baf458d56ef1ab12aeee21a93a7b194a9bffb2d836dc098b2dc6d663228af
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs and a primary lure related to 'Coin Master Free Spins' and game hacks. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' indicates that the document links to a redirector for such content. The document body and extracted URLs strongly suggest a phishing or scam attempt to trick users into visiting malicious sites. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/406889139/coin-master-free-spins-deutsch-download-2021-link-game-hack PDF link annotation
    • http://www.eucorro.com/arquivos/files/all-free-items-in-roblox_GM431946152.pdfIn PDF document text
    • http://www.eucorro.com/arquivos/files/coin-master-free-spins-link-blogspot-today_GM406889139.pdfIn PDF document text
    • http://www.eucorro.com/arquivos/files/minecraft-education-free_GM479516143.pdfIn PDF document text
    • http://www.eucorro.com/arquivos/files/free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • http://www.eucorro.com/arquivos/files/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • http://www.eucorro.com/arquivos/files/roblox-scam_GM431946152.pdfIn PDF document text
    • http://www.eucorro.com/arquivos/files/get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.eucorro.com/arquivos/files/roblox-promo-codes-free-robux_GM431946152.pdfIn PDF document text
    • http://www.eucorro.com/arquivos/files/coin-master-game-hacks_GM406889139.pdfIn PDF document text
    • http://www.eucorro.com/arquivos/files/coin-master-on-facebook_GM406889139.pdfIn PDF document text
    • http://www.eucorro.com/arquivos/files/oprewards-free-robux_GM431946152.pdfIn PDF document text
    • http://www.eucorro.com/arquivos/files/how-to-get-free-robux-on-phone-2021_GM431946152.pdfIn PDF document text
    • http://www.eucorro.com/arquivos/files/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://www.eucorro.com/arquivos/files/master-coin-free-spin_GM406889139.pdfIn PDF document text
    • http://www.eucorro.com/arquivos/files/coin-master-free-spins-cash_GM406889139.pdfIn PDF document text
    • http://www.eucorro.com/arquivos/files/how-to-earn-free-stars-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.eucorro.com/arquivos/files/gain-robux_GM431946152.pdfIn PDF document text
    • http://www.eucorro.com/arquivos/files/coin-master-free-spin-realme-products_GM406889139.pdfIn PDF document text
    • http://www.eucorro.com/arquivos/files/coin-master-hack-unlimited-spins_GM406889139.pdfIn PDF document text
    • http://www.eucorro.com/arquivos/files/jailbreak-roblox-hack_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
stream_003_off0000484e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x484E 24608 bytes
SHA-256: febddb3f9340e6991f75a31ac771f8c4b991ede4f1c47a0c6ad1a88c1f4e6d7c
font_01_sfnt_off00007f43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F43 19344 bytes
SHA-256: 2845a3e6ec075e64a55efc9536af757c9c9ea9b8a2b732129eaf0438470dc816

Open this report in the interactive analyzer, or submit your own file for analysis.