Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c68051d67c28caa…

MALICIOUS

PDF

33.2 KB Created: 2021-06-22 09:40:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: af6ca6453f7306a7f662ff990ae2e936 SHA-1: 886fda9dff7d6b70fecadac107e22ee2e6286c12 SHA-256: 7c68051d67c28caac746e159133f2a168c9fd52a85b9ca39e2508d13bcff9e58
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/roblox-hack-bad-behaviour-solve-game-hack PDF link annotation
    • http://altc.de/images/free-robux-obby-2021_GM431946152.pdfIn PDF document text
    • http://altc.de/images/can-you-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://altc.de/images/free-rare-hats-roblox_GM431946152.pdfIn PDF document text
    • http://altc.de/images/tower-of-hell-roblox-hack_GM431946152.pdfIn PDF document text
    • http://altc.de/images/who-tiktok-free-followers_GM835599320.pdfIn PDF document text
    • http://altc.de/images/game-hunters-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://altc.de/images/scp-lockdown-roblox-game-cheats_GM431946152.pdfIn PDF document text
    • http://altc.de/images/can-i-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • http://altc.de/images/free-coins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://altc.de/images/how-to-get-free-robux-and-tix-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://altc.de/images/coin-master-free-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://altc.de/images/free-vip-server-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://altc.de/images/minecraft-for-macbook-free_GM479516143.pdfIn PDF document text
    • http://altc.de/images/how-to-inspect-hack-roblox-robux-redeem_GM431946152.pdfIn PDF document text
    • http://altc.de/images/www-free-robux-com_GM431946152.pdfIn PDF document text
    • http://altc.de/images/minecraft-windows-10-code-free_GM479516143.pdfIn PDF document text
    • http://altc.de/images/can-you-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://altc.de/images/how-do-you-speed-hack-in-roblox_GM431946152.pdfIn PDF document text
    • http://altc.de/images/hacks-bandit-simulator-roblox_GM431946152.pdfIn PDF document text
    • http://altc.de/images/roblox-hack-download-mobile_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_off00002bff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2BFF 21732 bytes
SHA-256: 494c7e40b768a4e1c0cb95139fc33a86ab99b6c3ff7f16181436f7614b678f13
font_01_sfnt_off00005ba4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BA4 19368 bytes
SHA-256: fac76cb989513229a3e95246d0554adcf416954041de8b5ebf7851c7ec935f60