Malicious PDF — malware analysis report

Static analysis result for SHA-256 4863e137bd5d44dc…

MALICIOUS

PDF

34.8 KB Created: 2021-07-07 01:41:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 17fd2f6af2abe8d2517a71fada56357a SHA-1: bb1a56d10459bff6501a4c8fee5fc9a841c17d25 SHA-256: 4863e137bd5d44dc3b0ad54617fe6ec035edf4b198756ea3635bb5c834a82bdd
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a lure for a game hack, directing the user to download a file from a suspicious URL. The document body and heuristics indicate a malicious intent to trick users into downloading potentially harmful content. The primary IOC is the external URI pointing to a game hack download.

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-bedrock-edition-download-pc-free-game-hack PDF link annotation
    • http://niceviaapia.com.br/images/ckfinder/files/free-links-for-free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://niceviaapia.com.br/images/ckfinder/files/roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
    • http://niceviaapia.com.br/images/ckfinder/files/how-to-get-free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://niceviaapia.com.br/images/ckfinder/files/arcane-legacy-hack-roblox_GM431946152.pdfIn PDF document text
    • http://niceviaapia.com.br/images/ckfinder/files/hack-roblox-com-robux_GM431946152.pdfIn PDF document text
    • http://niceviaapia.com.br/images/ckfinder/files/free-roblox-21-02-2021_GM431946152.pdfIn PDF document text
    • http://niceviaapia.com.br/images/ckfinder/files/how-to-get-minecraft-windows-10-for-free-with-java_GM479516143.pdfIn PDF document text
    • http://niceviaapia.com.br/images/ckfinder/files/what-is-the-the-robux-hack-command_GM431946152.pdfIn PDF document text
    • http://niceviaapia.com.br/images/ckfinder/files/80-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://niceviaapia.com.br/images/ckfinder/files/today-coin-master-free-coins-link_GM406889139.pdfIn PDF document text
    • http://niceviaapia.com.br/images/ckfinder/files/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://niceviaapia.com.br/images/ckfinder/files/free-panda-mask-roblox_GM431946152.pdfIn PDF document text
    • http://niceviaapia.com.br/images/ckfinder/files/games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://niceviaapia.com.br/images/ckfinder/files/gainblox-gg-roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://niceviaapia.com.br/images/ckfinder/files/hack-cheats-for-roblox_GM431946152.pdfIn PDF document text
    • http://niceviaapia.com.br/images/ckfinder/files/hoops-hack-roblox_GM431946152.pdfIn PDF document text
    • http://niceviaapia.com.br/images/ckfinder/files/how-to-get-free-robux-in-console_GM431946152.pdfIn PDF document text
    • http://niceviaapia.com.br/images/ckfinder/files/hack-coin-master-no-survey_GM406889139.pdfIn PDF document text
    • http://niceviaapia.com.br/images/ckfinder/files/tower-of-hell-roblox-hack_GM431946152.pdfIn PDF document text
    • http://niceviaapia.com.br/images/ckfinder/files/free-coin-master-spins-blog_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_off000032ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32CE 21992 bytes
SHA-256: 2ad8a2d370870c7d58dd2b3aee61dfde8af3fbc2b5f00f2f8cfa61f5d8a5696e
font_01_sfnt_off00006327.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6327 19120 bytes
SHA-256: f0fe155c1e53163b1cade4296e0b54f6b6a61c47b1408d2b62092597c44fe41f