Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8e8b610dea5ef5a…

MALICIOUS

PDF

34.5 KB Created: 2021-07-06 03:27:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 2e655cff90a3a91cacb44ead6303c305 SHA-1: 226fddeec5a3dadacf122245b9f84bd4a04b0285 SHA-256: c8e8b610dea5ef5addc9d2a7de201e23b74aa749b652c0dbd065677bb02fbde2
82 Risk Score

Malware Insights

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

This PDF document employs a game hack lure to trick users into visiting a malicious URL. The primary URL, http://netcdn.tw/app/406889139/coin-master-jackpot-madness-hack-game-hack, is associated with a high-confidence heuristic for game hack redirects. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to exploit user interest in game cheats to deliver a secondary payload or lead to a phishing site.

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/406889139/coin-master-jackpot-madness-hack-game-hack PDF link annotation
    • http://katalog.stikesmukla.ac.id/repository/free-robux-real_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/free-roblox-gift-card-codes-unused-2021_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/free-20-roblox-pastebin_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/robuxlove-net-free-robux_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/promobilemafiacom-robux-cheats_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/free-roblox-groups_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/free-dominus-site-robloxcom_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/how-to-hack-pet-simulator-roblox_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/how-to-hack-mad-city-roblox-step-by-step_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/free-minecraft-accounts-reddit_GM479516143.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/free-robux-money-generator_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/coin-master-spin-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/do-you-wasnt-free-robux_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/aimbot-exe-roblox_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/114-4-hacks_GM479516143.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/free-robux-control-center_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/try-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/coin-master-tricks-and-hacks_GM406889139.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/coin-master-daily-spin-free_GM406889139.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/coin-master-tricks_GM406889139.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_off0000306d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x306D 22688 bytes
SHA-256: 5e58a0ea1e1b5815d892a4c16f5ed17cfeb75f27614d559a6a6f943bb7575c1d
font_01_sfnt_off0000633c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x633C 18520 bytes
SHA-256: e89fa5ec929b8535a397edffe5ad2130546f02901cf85d0b843382a2d23970af

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