Malicious PDF — malware analysis report

Static analysis result for SHA-256 8634e92c017eb527…

MALICIOUS

PDF

36.5 KB Created: 2021-07-04 19:48:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 76e68b13770fccf049da55936ccf00da SHA-1: a59ff7a92183391fc48311b0d072ff39609eea22 SHA-256: 8634e92c017eb527151290cb95597347a79dc6d6f75a0d7adebbd650cf128bec
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to game hacks and free generators, specifically mentioning Roblox. It contains multiple embedded URLs that redirect to sites offering such content, with a primary URL being http://netcdn.tw/app/431946152/how-to-change-your-username-in-roblox-for-free-game-hack. The ML classifier strongly indicates maliciousness, and the heuristic firings confirm the use of a game hack redirect lure. No scripts were extracted, but the document's structure and embedded URLs suggest an attempt to trick users into visiting malicious sites, likely for further exploitation or malware delivery.

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/431946152/how-to-change-your-username-in-roblox-for-free-game-hack PDF link annotation
    • http://stiepariperpus.web.id/sarjana//repository/free-robux-com-roblox_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/cheat-undetectetble-roblox_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/minecraft-java-server-hosting-free_GM479516143.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/free-tiktok-followers-quick-and-easy_GM835599320.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/coin-master-free-coins--spins_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/free-catalog-things-you-never-knew-existed-roblox_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/how-to-hack-into-somebodys-roblox-account_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/free-apk-mods-coin-master_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/roblox-free-robux-free-hack_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/roblox-cheat-codes_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/coin-master-free-spins-2021-app_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/coin-master-hack-spin-generator_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/coin-master-app-for-free-spins_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/free-robux-by-roblox-roblox_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/free-robux-no-download_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/rbxboost-earn-free-roblox_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/coin-master-spins-hack-2021_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/roblox-atack-on-titan-hack_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/free-robux-safe_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/how-to-hack-assassin-roblox-2021_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_off00003368.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3368 23504 bytes
SHA-256: fbbf2377992037530b0a186b7da2ddd04a0bb4fcfd4d0c7a45c46d4078823675
font_01_sfnt_off000068b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68B5 19540 bytes
SHA-256: 19f70e048267cfd846c4d9a5995d7f8b31e6238cd12ed71cdb489eb360301400

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