Malicious PDF — malware analysis report

Static analysis result for SHA-256 9247d0c0f775c3d1…

MALICIOUS

PDF

33.9 KB Created: 2021-07-05 10:05:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: f218f5e93dc180a589333f3cf86c7c07 SHA-1: c49a19319e73471dcd3ec8e699564b7bc16b6b11 SHA-256: 9247d0c0f775c3d1f84feac0b0ebee127ef88e09b8c7707c286699b9d1d98700
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to game hacks and free generators, specifically mentioning Roblox and Coin Master. It contains multiple embedded URLs that redirect to potentially malicious sites, with the primary one being http://netcdn.tw/app/431946152/roblox-www-com-game-hack. The ML classifier strongly flagged this PDF as malicious, indicating a high likelihood of it being used for phishing or malware distribution.

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/roblox-www-com-game-hack PDF link annotation
    • http://perpus.unpam.ac.id/repository/roblox-arsenal-hacks-download_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/how-to-get-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/coin-master-hack-2021-ios_GM406889139.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/how-to-get-free-robux-for-real_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/moonactive-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/roblox-lucky-blocks-hack_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/hacks-for-roblox-tower-battles_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/50-free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/free-robux-weebly-com_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/info-roblox-com-robux_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/coin-master-free-spins-link-may-2021_GM406889139.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/gamehunters-club-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/pubg-uc-visa-card_GM1330123889.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/free-roblox-hair-codes_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/roblox-login-hack_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/how-to-get-roblox-credit-for-free_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/coin-master-free-coin-hack_GM406889139.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_off00002e57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E57 22028 bytes
SHA-256: 40eef80907f012b9f590ca013bc0242d0ccab883190a4fbd1cb2d2e1320c32bb
font_01_sfnt_off00005eef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EEF 19108 bytes
SHA-256: ceed28034d8c161028cd36873b2602c2ebba079ae57d119b604a35ba28887711

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