Malicious PDF — malware analysis report

Static analysis result for SHA-256 2313bdb1eb13d111…

MALICIOUS

PDF

34.4 KB Created: 2021-07-03 17:12:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: d40a069ce761e02585fd738cea57c575 SHA-1: bce8530ffc04bce4aa423bcb2e17aaf9438a8b7e SHA-256: 2313bdb1eb13d111b01a5dbb0e43f2efcb53b19158f1fc4af922c317c27ec288
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/479516143/free-minecraft-for-kids-game-hack PDF link annotation
    • https://pasca.unisba.ac.id/elibrary/repository/best-way-to-get-free-and-easy-robux-fast_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/roblox-anime-fighting-simulator-hack_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/roblox-phantom-forces-hack-credits_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/minecraft-windows-10-edition-unlock-full-game-free_GM479516143.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/roblox-free-daily-robux_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/robux-free-promo-codes_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/play-free-roblox-com_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/free-level-7-hack-roblox_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/a-code-for-free-robux-script_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/free-coin-master-gifts_GM406889139.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/free-money-in-roblox-bloxburg_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/roblox-apk-hack-2021_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/how-to-get-free-john-in-roblox_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/get-free-robux-by-completing-offers_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/roblox-free-robux-hack-mod-apk-download_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/how-to-watch-ads-for-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/coin-master-facebook-free-spins_GM406889139.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/free-robux-every-5-seconds_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/hack-pour-tre-deban-sur-roblox_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/how-to-hack-on-an-ipad-in-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
font_00_sfnt_off000031f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31F4 22600 bytes
SHA-256: 771162b7d85df0a31520d3769e9284a3209d4147d13c7a88840e5d967f1e3f5f
font_01_sfnt_off000063f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63F5 18172 bytes
SHA-256: e5d487363d0d35603ecd66da3677db3a6548ac0d8d4f257b04789ffe9189bc1b

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