Malicious PDF — malware analysis report

Static analysis result for SHA-256 716fe2986d262004…

MALICIOUS

PDF

33.3 KB Created: 2021-07-06 05:10:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 1be7c28abeba5606f840c0bb07ab69bd SHA-1: b525ff401de8692e4b41d46c0e145f9937d9835b SHA-256: 716fe2986d262004b112d02e9e43355ed36c24424f205e7c70bfa15ab0d02243
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple links disguised as game hacks and generators, such as 'minecraft-for-free-games-game-hack'. These links likely redirect to malicious sites designed to trick users into downloading malware or engaging in scams. The presence of 'cmd' in some URLs suggests potential execution of commands, aligning with a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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.
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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/479516143/minecraft-for-free-games-game-hack PDF link annotation
    • http://lib.untad.ac.id/repository/how-to-get-free-robux-november-2021_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/roblox-hack-account-robux-free_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/robux-free-gift-card_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/how-to-win-robux_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/se-puede-hackear-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/coin-master-free-spins-apk_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/how-to-hack-roblox-accounts-2021-using-cmd_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/muscle-simulator-roblox-cheat_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/roblox-bloxburg-free-release-date_GM431946152.pdfIn macro / runtime command snippet
    • http://lib.untad.ac.id/repository/fros-digimon-v12-hack-roblox_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/how-to-get-free-roblox-faces-2021_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/roblox-the-conquerors-hack_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/youtube-robux-hack-html_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/roblox-glitches-and-cheats_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/free-robux-on-the-game_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/how-to-get-free-robux-on-pc_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/how-to-hack-csgo-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/coin-master-hack_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/minecraft-free-version_GM479516143.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/free-foxy-food-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/muscleIn macro / runtime command snippet
    • 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_off00002e59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E59 22420 bytes
SHA-256: cd790603f6b0d9be8e7a7e01c147a8eaa15e8f9be4fc6c5b3023dd7726f5f1e1
font_01_sfnt_off00005f74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F74 18260 bytes
SHA-256: 253101e49709f7aa7821dbc40117ac29270749785d2b8ec4300bbc18b36243b7

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