Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd520bf8674d7314…

MALICIOUS

PDF

33.4 KB Created: 2021-07-05 22:40:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 62383a6b0ec4e0cb014ca04a6ce6ffd2 SHA-1: a67cc25fc7fbc25e7c455c795d2f58c65a662a5c SHA-256: bd520bf8674d7314cab4180b2a728c872eebb0d5e05915b801531cb96899e8f4
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for game hacks, specifically mentioning Minecraft and Roblox, and directs users to a suspicious URL. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' strongly indicates a malicious intent to redirect users to potentially harmful content. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lure suggest a phishing or redirection attack. The ML classifier also flagged this PDF with high confidence.

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/479516143/minecraft-xray-hack-game-hack PDF link annotation
    • http://elib.acls-indonesia.com/repository/how-to-hack-coin-master-using-es-file_GM406889139.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/free-robux-not-fake-2021_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/autohotkey-hack-roblox_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/free-24-7-minecraft-server_GM479516143.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/hack-card-collection-coin-master_GM406889139.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/how-to-get-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/roblox-how-to-get-free-lvl-7-hack_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/how-do-you-make-clothes-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/fan-free-games-roblox_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/how-to-get-free-robux-no-errores_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/how-to-earn-free-stars-on-coin-master_GM406889139.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/free-time-on-roblox_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/roblox-hack-ios_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/coin-master-mod_GM406889139.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/how-to-get-minecraft-dungeons-for-free_GM479516143.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/free-roblox-no-human-verification_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/roblox-free-bag-goku_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/free-robux-codes-2021-real_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/how-to-get-free-robux-easy-2021_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_off00002db2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DB2 22532 bytes
SHA-256: 9599cca9bdbe8cb82bffd774e9529f30bea84638f0f54d2f1e8704412dad1dea
font_01_sfnt_off00005f7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F7F 18432 bytes
SHA-256: 387b7b526c621f44d63a31baef35ce25152a59c4b2bb3bea0ec40756a9ef9a45

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