Malicious PDF — malware analysis report

Static analysis result for SHA-256 9173405cfd0fd8ef…

MALICIOUS

PDF

34.3 KB Created: 2021-07-06 09:01:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 1ebbe52fdf98c81b5aa5713b0f730326 SHA-1: bc3c4ab5e45568e28bd2b16e36477eb50e4d9609 SHA-256: 9173405cfd0fd8ef5f478531640bab6acd8051de22f426dfb839e4c29197ff1d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that are disguised as game hacks or generators, with a primary lure pointing to 'minecraft-windows-10-edition-hacks-game-hack'. The ML classifier strongly flagged this PDF as malicious. The presence of these lures suggests the document is designed to trick users into downloading potentially harmful content, likely malware.

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/minecraft-windows-10-edition-hacks-game-hack PDF link annotation
    • http://elibraryfk.unjani.ac.id/elibrary/repository/robux-today_GM431946152.pdfIn PDF document text
    • http://elibraryfk.unjani.ac.id/elibrary/repository/hack-mad-paintball-roblox_GM431946152.pdfIn PDF document text
    • http://elibraryfk.unjani.ac.id/elibrary/repository/roblox-free-printables_GM431946152.pdfIn PDF document text
    • http://elibraryfk.unjani.ac.id/elibrary/repository/coin-master-hack-apk-free-download_GM406889139.pdfIn PDF document text
    • http://elibraryfk.unjani.ac.id/fkrepository/repository/coin-master-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://elibraryfk.unjani.ac.id/fkrepository/repository/how-is-tiktok-free_GM835599320.pdfIn PDF document text
    • http://elibraryfk.unjani.ac.id/elibrary/repository/how-to-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://elibraryfk.unjani.ac.id/fkrepository/repository/hack-para-roblox-2021-pc_GM431946152.pdfIn PDF document text
    • http://elibraryfk.unjani.ac.id/elibrary/repository/roblox-high-school-life-free-steff_GM431946152.pdfIn PDF document text
    • http://elibraryfk.unjani.ac.id/elibrary/repository/cheat-codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://elibraryfk.unjani.ac.id/elibrary/repository/minecraft-java-account-free_GM479516143.pdfIn PDF document text
    • http://elibraryfk.unjani.ac.id/elibrary/repository/assassin-hack-script-roblox_GM431946152.pdfIn PDF document text
    • http://elibraryfk.unjani.ac.id/elibrary/repository/1m-robux-cheat_GM431946152.pdfIn PDF document text
    • http://elibraryfk.unjani.ac.id/elibrary/repository/is-minecraft-free-on-switch_GM479516143.pdfIn PDF document text
    • http://elibraryfk.unjani.ac.id/elibrary/repository/id-that-hack-roblox_GM431946152.pdfIn PDF document text
    • http://elibraryfk.unjani.ac.id/fkrepository/repository/minecraft-hack-mod_GM479516143.pdfIn PDF document text
    • http://elibraryfk.unjani.ac.id/elibrary/repository/gg-roblox-hack_GM431946152.pdfIn PDF document text
    • http://elibraryfk.unjani.ac.id/fkrepository/repository/roblox-com-free_GM431946152.pdfIn PDF document text
    • http://elibraryfk.unjani.ac.id/fkrepository/repository/roblox-arsenal-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • http://elibraryfk.unjani.ac.id/fkrepository/repository/xray-mod-minecraft-114_GM479516143.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_off000030f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30F7 22120 bytes
SHA-256: 206b04654f2d0585c355b4f3aeaa30890cd53c77595a5fc17f6a0f15621aa318
font_01_sfnt_off00006128.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6128 18980 bytes
SHA-256: a6307b4a34671519b199cee218b4237ff61237f549c73bd97f369b8a393b1b5a

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