Malicious PDF — malware analysis report

Static analysis result for SHA-256 f805b47fbf8ff13c…

MALICIOUS

PDF

34.5 KB Created: 2021-06-22 08:16:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 95f7849c1c4b418e9767ad8013ef54f3 SHA-1: 1de40f5a1852da6fc794c829bc547283803c53c6 SHA-256: f805b47fbf8ff13c497e58b0e6d50840cd3bfa8010dc5f417eee09478ffc2e51
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/best-free-games-to-play-on-roblox-game-hack PDF link annotation
    • http://kukuck.de/images/minecraft-windows-10-edition-free_GM479516143.pdfIn PDF document text
    • http://kukuck.de/images/shadowslayefighter-in-roblox-robux-hack_GM431946152.pdfIn PDF document text
    • http://kukuck.de/images/how-to-hack-roblox-to-get-free-builders-club_GM431946152.pdfIn PDF document text
    • http://kukuck.de/images/when-tiktok-free-download_GM835599320.pdfIn PDF document text
    • http://kukuck.de/images/minecraft-pe-free-download-ios-no-jailbreak_GM479516143.pdfIn PDF document text
    • http://kukuck.de/images/hack-roblox-reddit_GM431946152.pdfIn PDF document text
    • http://kukuck.de/images/free-minecraft-alt-accounts_GM479516143.pdfIn PDF document text
    • http://kukuck.de/images/cheats-fr-roblox_GM431946152.pdfIn PDF document text
    • http://kukuck.de/images/what-to-do-if-your-roblox-acc-has-been-hacked_GM431946152.pdfIn PDF document text
    • http://kukuck.de/images/infinite-jump-hack-roblox-download-in-discription_GM431946152.pdfIn PDF document text
    • http://kukuck.de/images/cheat-tower-battles-roblox_GM431946152.pdfIn PDF document text
    • http://kukuck.de/images/how-to-get-more-spins-on-coin-master-for-free_GM406889139.pdfIn PDF document text
    • http://kukuck.de/images/mad-city-unlimited-money-hack-roblox-2-26-2021_GM431946152.pdfIn PDF document text
    • http://kukuck.de/images/free-spins-and-coins-com_GM406889139.pdfIn PDF document text
    • http://kukuck.de/images/roblox-nintendo-switch-free_GM431946152.pdfIn PDF document text
    • http://kukuck.de/images/near-tiktok-free-view_GM835599320.pdfIn PDF document text
    • http://kukuck.de/images/can-i-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://kukuck.de/images/get-free-robux-now_GM431946152.pdfIn PDF document text
    • http://kukuck.de/images/free-tiktok-fans-no-verification_GM835599320.pdfIn PDF document text
    • http://kukuck.de/images/free-robux-codes_GM431946152.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_off00002fc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FC9 22156 bytes
SHA-256: 0e0135b945bd16d4a045f5de77105821e4f7be698d64c3c2c22dc196a99e1f9c
font_01_sfnt_off00006111.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6111 19348 bytes
SHA-256: 4d26b1ee89c1c613f78aa62ccd4d79e74e8cc9f2cdabbaa348f73d152cb7b923