Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3e001a91edaba76…

MALICIOUS

PDF

35.1 KB Created: 2021-07-08 18:48:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 0a88d6478f4518682a907fbca301112c SHA-1: b9b0a698e74c519af5643ebfec24eb17bb123da1 SHA-256: e3e001a91edaba7657df15af06649360c9946f46d33d32c83fae768b69336df2
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains a large number of external links, many of which are disguised as game hacks or generators. The primary lure appears to be related to 'Coin Master' and 'Roblox' hacks, directing users to potentially malicious websites. The heuristic findings indicate a link farm designed to redirect users, and the ML classifier strongly suggests malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/406889139/www-cheatsk-com-coin-master-hack-game-hack PDF link annotation
    • http://digilib-ppsunisma.ac.id/repository/roblox-dragon-ball-rage-hack-2021_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/i-will-draw-your-roblox-character-for-free_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/how-to-hack-roblox-using-cheat-engine-65_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/song-id-for-free-money-cardi-b-roblox_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/roblox-r2da-hacks_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/auto-clicker-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/amimbot-hack-for-strucid-roblox_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/toolbox-for-mcpe_GM479516143.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/legit-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/free-unlimited-coin-master-online-tool_GM406889139.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/free-robux-without-verify-2021-april_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/free-green-dawing-roblox_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/download-to-free-admin-in-roblox_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/bird-simulator-hack-roblox_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/csgo-hack-script-roblox_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/minecraft-account-hacked_GM479516143.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/earn-free-robux-by-watching-videos-and-playing-games_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/coin-master-daily-free-spins-link-haktuts_GM406889139.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/how-to-hack-someone-on-roblox_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
stream_002_off00003301.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3301 22640 bytes
SHA-256: ff616185882202bb30d541d5dd61a7f59c3c9f4f7c3c5facd3ea528ee24122ad
font_01_sfnt_off0000654c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x654C 18792 bytes
SHA-256: f6c5424fd404eb7be77cdb2ff0fed3c7235147194280ea4c877b3935d22dbc9c

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