Malicious PDF — malware analysis report

Static analysis result for SHA-256 5acb5a5e4e3960ae…

MALICIOUS

PDF

35.0 KB Created: 2021-06-17 22:21:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 38519aeff55f0235fab8ddf61ef86aab SHA-1: 796a567752dfd6c8238c2b899910a739da692855 SHA-256: 5acb5a5e4e3960aefb6a482d23721127c76c0c1ac62fd19dc6d7995c4191cf8a
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-shinobi-life-cheat-engine-game-hack PDF link annotation
    • http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/coin-master-fan-hack_GM406889139.pdfIn PDF document text
    • http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/cb-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/how-to-gte-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/how-to-buy-robux-for-free_GM431946152.pdfIn PDF document text
    • http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/easy-ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/money-money-roblox-free-catalog_GM431946152.pdfIn PDF document text
    • http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/coin-master-online-hack-tool_GM406889139.pdfIn PDF document text
    • http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/coin-master-download-hack-ios_GM406889139.pdfIn PDF document text
    • http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/how-to-get-free-robux-games_GM431946152.pdfIn PDF document text
    • http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/mcpe-master-unlimited-coins-hack-apk_GM406889139.pdfIn PDF document text
    • http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/free-vip-roblox_GM431946152.pdfIn PDF document text
    • http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/coin-master-free-spins-cheats_GM406889139.pdfIn PDF document text
    • http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/haktuts-coin-master-free-spin-link-today_GM406889139.pdfIn PDF document text
    • http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/how-to-get-free-robux-by-using-cookies_GM431946152.pdfIn PDF document text
    • http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
    • http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/bloxpage-free-robux_GM431946152.pdfIn PDF document text
    • http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/minecraft-java-free_GM479516143.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_off00003378.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3378 22228 bytes
SHA-256: aeb8e3cd4dc5291ec268d80591da090cc28c0f51b295939b05928f3b8496c119
font_01_sfnt_off000064d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64D2 18688 bytes
SHA-256: 0945007ad4a90d571312a3d2831e10588968903d586ac80faf8b5cd5d1401ee1