Malicious PDF — malware analysis report

Static analysis result for SHA-256 3570b00c78d8d90e…

MALICIOUS

PDF

44.4 KB Created: 2021-06-03 07:18:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 603232c7e7af1f5266219e826ddcab50 SHA-1: 3f6441e7fb4aa7d292c564d82b88c1a252941864 SHA-256: 3570b00c78d8d90e71cb17c8876f05d640a180ef43b6c1e7010a93e110344ea7
122 Risk Score

Malware Insights

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

The PDF contains a high-severity heuristic indicating it links to a game hack redirector, specifically targeting users interested in 'Roblox Rewards'. The document body, though heavily obfuscated, contains references to the same URL. The presence of a clipboard command lure suggests an attempt to trick the user into executing a command, likely to download or run a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 5

  • 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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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 https://netcdn.online/app/431946152/roblox-rewards-site-game-hack PDF link annotation
    • http://digilib.iailm.ac.id/repository/hack-para-las-contraseas-de-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/worst-roblox-avatars_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/coin-master-coins-free_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/gaming-dunia-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/how-do-you-get-free-food-in-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/hack-xp-net-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/free-robux-please_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/coin-master-free-spins-iphone-2021_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-hack-without-verification-2021_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/how-do-you-install-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/oprewards-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-robux-obby_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/hacks-para-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/robux-websites-2021_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-hack-coin-master-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/pubg-uc-2021_GM1330123889.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/robux-link_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/free-coin-master-account_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/minecraft-apk-download-free-11-055_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/pubg-2021-uc-glitch_GM1330123889.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_004_off00004eb6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4EB6 25580 bytes
SHA-256: 237c4e4784474bcc0684201cebea41b290673ba1267d22382c2910d63de112da
font_01_sfnt_off000089ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89EC 18572 bytes
SHA-256: f83ae0dbfbb45e04c8caacad03ed19fd1097c60103a53bce71609c90e4e6ea01

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