Malicious PDF — malware analysis report

Static analysis result for SHA-256 85cef69e82d4dcc6…

MALICIOUS

PDF

35.5 KB Created: 2021-07-04 10:50:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: a4537d4495602d23f4122df0d4ba0893 SHA-1: d1d73eb86bd4b8fe546d03cbec1d0e5627e31500 SHA-256: 85cef69e82d4dcc606d73b0fd5c75a586f0b27fb89427f28b4c14ac0a7da4b7c
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.tw/app/431946152/how-to-get-free-robux-without-verification-2021-game-hack PDF link annotation
    • https://limebug.com/media/storage/editor/files/how-to-hack-any-roblox-account-using-windows-command-prompt_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/how-to-make-hacking-scripts-in-roblox_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/can-i-get-robux-for-free_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/roblox-booga-booga-hack_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/how-to-get-minecraft-dungeons-for-free_GM479516143.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/how-to-find-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/how-to-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/how-to-get-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/minecraft-pocket-edition-free-apk_GM479516143.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/how-to-get-free-robux-without-offers_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/earn-robux-today-earn-robux-today_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/how-to-get-stuff-that-cost-coins-free-mcpe-master_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/how-to-get-free-hacks-for-roblox_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/youtube-how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/free-robux-real-2021_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/coin-master-reward-link-2021_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/free-spins-for-coin-master-hack_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_off0000321f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x321F 22080 bytes
SHA-256: 8cb81dd402aa49f42b6ed74e126acb01b1f16b4a1c1036c5a10e45cec2a8d8b0
font_01_sfnt_off000062e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62E3 20004 bytes
SHA-256: f525ebf185ff77ca350f82577fc455037f682c9e152adbcdc84b979bf7cf1078

Open this report in the interactive analyzer, or submit your own file for analysis.