Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ae4480709058864…

MALICIOUS

PDF

36.9 KB Created: 2021-07-02 03:53:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: c9ff1d42a6826915fd4f0e446cb5b3f7 SHA-1: d1fcf0406dd5d5fa80b54caf54ba70dde0cfe7a4 SHA-256: 4ae44807090588644cfe613fe7e6dbbf2f11a4b116759829e051a25b653d7283
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 0.9980

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.co/app/431946152/how-to-get-free-robux-quick-and-easy-game-hack PDF link annotation
    • http://pustaka.bbppketindan.info//repository/coin-master-app-hacks_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/free-roblox-card-codes-december-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/batu-kolukfaki-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/hackear-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/roblox-fly-cheat-engine-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/robux-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/robux-online_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/how-to-get-free-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/how-to-get-free-robux-in-roblox-wasted-no-time_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/free-gun-exploit-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/robux-fre-video_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/roblox-free-domino-crown_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/free-aimbot-hacks-for-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/free-robux-website-without-human-verification_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/how-to-get-free-robux-without-gift-cards_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/free-minecraft-thumbnails_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/roblox-why-are-there-no-free-clothes-reddit_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/como-hackear-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/free-robux-pins_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/coin-master-hack-version-33-2_GM406889139.pdfIn PDF document text
    • https://www.roblox.com/.IIn 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_off000033c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33C7 23484 bytes
SHA-256: 61961ffbe84cbcdf512b6224505cab172d3f51aee3c08002a156013bb531a3ee
font_01_sfnt_off000068d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68D5 19784 bytes
SHA-256: dbf1dca1c2d43efc6e6bc68923a214e13b0a404f41226db7175e0fd3bb5b3e36

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