Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c22c4eaa0072344…

MALICIOUS

PDF

42.3 KB Created: 2021-05-11 02:37:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 99dce958c8084affa94bb8ea36c42fc2 SHA-1: 1379ac1d6e2f445527164c398553872bce2c5159 SHA-256: 0c22c4eaa0072344750c50f71b827a5485ac1172c335076bc3bb876b9ee2782b
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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/431946152/how-do-you-get-free-roblox-money-game-hack PDF link annotation
    • http://ghegamethu.vn/images/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • http://ghegamethu.vn/images/how-do-u-hack-roblox_GM431946152.pdfIn PDF document text
    • http://ghegamethu.vn/images/spinuri-gratis-coin-master_GM406889139.pdfIn PDF document text
    • http://ghegamethu.vn/images/roblox-rape-hack_GM431946152.pdfIn PDF document text
    • http://ghegamethu.vn/images/coin-master-hack-2021-app_GM406889139.pdfIn PDF document text
    • http://ghegamethu.vn/images/best-free-spin-app-for-coin-master_GM406889139.pdfIn PDF document text
    • http://ghegamethu.vn/images/who-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://ghegamethu.vn/images/114-hacks_GM479516143.pdfIn PDF document text
    • http://ghegamethu.vn/images/free-admin-roblox_GM431946152.pdfIn PDF document text
    • http://ghegamethu.vn/images/moonactive-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://ghegamethu.vn/images/free-robux-codes-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://ghegamethu.vn/images/coin-master-ios-hack-download_GM406889139.pdfIn PDF document text
    • http://ghegamethu.vn/images/hacks-master-coin_GM406889139.pdfIn PDF document text
    • http://ghegamethu.vn/images/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://ghegamethu.vn/images/get-free-roblox_GM431946152.pdfIn PDF document text
    • http://ghegamethu.vn/images/coin-master-hack-version-download-2021_GM406889139.pdfIn PDF document text
    • http://ghegamethu.vn/images/coin-master-free-spins-link-2021-hack_GM406889139.pdfIn PDF document text
    • http://ghegamethu.vn/images/roblox-free-accessories_GM431946152.pdfIn PDF document text
    • http://ghegamethu.vn/images/boost9-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://ghegamethu.vn/images/coin-master-hack-here_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_off000048af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48AF 24528 bytes
SHA-256: 590bc9c0ad61b15229b6fd26cf780f96a32d538cf36c733db55b119e60ef046f
font_01_sfnt_off00008078.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8078 19064 bytes
SHA-256: 94f9efcc29addd786a26302115b4c31227e6eded102cc07b8eb042232f1d4f5b