Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff2f8e8813bb603f…

MALICIOUS

PDF

35.2 KB Created: 2021-06-28 10:02:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: f81079434d0c1f8aed4dfcdb52afaf1f SHA-1: ae99f7399ed259da13086731536acad64b120ed5 SHA-256: ff2f8e8813bb603f6855ec3aaa3d81ffcb19f7f224302039960ab61e3eec71a5
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-hack-for-more-cash-in-roblox-wizard-tycoon-game-hack PDF link annotation
    • http://elib.acls-indonesia.com/repository/minecraft-114-4-download-free_GM479516143.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/is-there-a-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/roblox-script-kill-player-hack_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/free-spin-coin_GM406889139.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/roblox-jailbreak-hack-download-2021_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/how-to-get-roblox-money_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/free-cracked-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/minecraft-114-4-download_GM479516143.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/rbxoffers-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/coin-master-tips_GM406889139.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/coin-master-50-spin-link_GM406889139.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/roblox-ro-ghoul-free-vip-server_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/coin-master-vip-hack_GM406889139.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/coin-master-unlimited-spin-link_GM406889139.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/roblox-free-pets_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/roblox-robux-hack-easy-for-lg_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/free-roblox-gui_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/roblox-hack-xeno_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/coin-master-free-spins-android_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_off00002f75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F75 22504 bytes
SHA-256: 7fd3ece65ed552c6a5180b91e030f5b981ec84a4d44d48dc77a1832bf199685b
font_01_sfnt_off00006173.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6173 20100 bytes
SHA-256: f8f92758caf491757a39f2830c1c92409cf9eef6152aeecd1138bccc4993510e

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