Malicious PDF — malware analysis report

Static analysis result for SHA-256 cab72bc99a248cf3…

MALICIOUS

PDF

48.4 KB Created: 2021-06-09 03:22:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 0e8a74f0ff9e6a64b48503fa3bc65d76 SHA-1: 779042292e68683a3749dd3f752eff18695e7a25 SHA-256: cab72bc99a248cf37e74c4ddababa8edae100a0be3374e7b4a66c66a2452f440
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 0.9871

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 https://netcdn.tw/app/431946152/all-roblox-games-you-can-hack-with-proxox-game-hack PDF link annotation
    • http://stiepariperpus.web.id/sarjana//repository/roblox-login-hack_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/roblox-adopt-me-hack_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/roblox-games-with-free-vip-servers_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/free-robux-meme_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/how-to-exploit-on-roblox-cheat-engine_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/hack-coin-master-apk_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/free-tiktok-followers-generator_GM835599320.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/freerubux_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/robux-codes_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/pokemon-go-free-7-km-eggs_GM1094591345.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/huskybuscom-free-robux_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/free-coin-master-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/what-is-coin-master-app_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/install-free-game-coin-master_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/coin-master-mod_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/free-spins-and-coins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/free-minecraft-realm-codes_GM479516143.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/free-robux-net_GM431946152.pdfIn PDF document text
    • https://www.nrzroblox.comIn 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_off00005374.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5374 29824 bytes
SHA-256: 4d9a231a5d587e03ace7673c85d018238ffe3c513b6a0cf13523983eff22431e
font_01_sfnt_off00009749.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9749 19488 bytes
SHA-256: 23272ab41bf5be20c5e6d8da5a54f1c0ca1db5d8e7a526b8648402c28b1bd1d6

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