Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5b55f0cfa16baec…

MALICIOUS

PDF

43.1 KB Created: 2021-05-12 22:13:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 620ead49af481cc90c9416a3f86de3e1 SHA-1: a10c5821232a947d4102bba23e594588aef2e462 SHA-256: b5b55f0cfa16baecb835842b4f647a69cf990baf930942e1949764c0f741713d
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/406889139/coin-master-hack-ios-reddit-game-hack PDF link annotation
    • http://parsbaft.com/images/coin-master-free-100-spin-link_GM406889139.pdfIn PDF document text
    • http://parsbaft.com/images/https-oprewards-com-roblox_GM431946152.pdfIn PDF document text
    • http://parsbaft.com/images/how-to-hack-coin-master-in-pc_GM406889139.pdfIn PDF document text
    • http://parsbaft.com/images/free-robux-games-that-actually-work_GM431946152.pdfIn PDF document text
    • http://parsbaft.com/images/get-robux_GM431946152.pdfIn PDF document text
    • http://parsbaft.com/images/minecraft-cracked-client_GM479516143.pdfIn PDF document text
    • http://parsbaft.com/images/roblox-premium-free_GM431946152.pdfIn PDF document text
    • http://parsbaft.com/images/free-robux-no-generator_GM431946152.pdfIn PDF document text
    • http://parsbaft.com/images/moon-active-games_GM406889139.pdfIn PDF document text
    • http://parsbaft.com/images/mcpe-master-unlimited-coins-free-download_GM406889139.pdfIn PDF document text
    • http://parsbaft.com/images/coin-master-time-hack_GM406889139.pdfIn PDF document text
    • http://parsbaft.com/images/coin-master-mod-apk_GM406889139.pdfIn PDF document text
    • http://parsbaft.com/images/com-roblox_GM431946152.pdfIn PDF document text
    • http://parsbaft.com/images/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://parsbaft.com/images/coin-master-free-spin-and-coin-link-2021-today_GM406889139.pdfIn PDF document text
    • http://parsbaft.com/images/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • http://parsbaft.com/images/coin-master-hacks-2021_GM406889139.pdfIn PDF document text
    • http://parsbaft.com/images/hacks-for-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • http://parsbaft.com/images/coin-master-heaven-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://parsbaft.com/images/cm-free-spins_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
stream_003_off00004c56.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C56 25312 bytes
SHA-256: e80c56bcccb25dd5e1a346fb0abc400852bc3b6c8cb20c33cae52e2e0d9356c3
font_01_sfnt_off0000874d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x874D 17888 bytes
SHA-256: f6db0d5ce37e689a46ceb71450432421ac9d8148bbd676fee9db03c905ab63a7

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