Malicious PDF — malware analysis report

Static analysis result for SHA-256 d183a3064274314b…

MALICIOUS

PDF

46.6 KB Created: 2021-06-04 03:38:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 9a33090f9c0b93ecebfdc5e322c087cb SHA-1: de70265599b32440c4bc0966dd9adcd5d17e56f2 SHA-256: d183a3064274314b8e7df3dcaf769ecea8e5b5281233232b120a0c4d78ac2c38
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links and a lure related to game hacks and free currency, specifically mentioning 'getrobux' and 'coin master'. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' and the embedded URL strongly suggest a social engineering tactic to redirect users to potentially malicious sites. No scripts were extracted, but the document's structure and content point towards a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9748

Heuristics 5

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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.online/app/431946152/getrobux-info-game-hack PDF link annotation
    • http://www.library.umbjm.ac.id/repository/coin-master-hack-game-download-mod-apk_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/coin-master-mod-apk-free-download-for-android_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/coin-master-codes_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/roblox-hax_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/roblox-hackprogamers-com_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/roblox-inappropriate_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/free-roblox-passwords_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/coin-master-free-spins-link-today-hack_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/roblox-com-redeem_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/can-you-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/tiktok-free-views_GM835599320.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/lazyblocks-com-robux_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/fbchampion-com_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/minecraft-free-download-apk-softonic_GM479516143.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/hack-coin-master-without-root_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/coin-master-free-spins-hack-without-human-verification_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/free-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000508f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x508F 25228 bytes
SHA-256: 52887267bbc1201748f2c493260a87a078c83b25c567f137f3fbb7afeeba6c04
font_01_sfnt_off00008a37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A37 2880 bytes
SHA-256: b053084cafd01c649462d87667ba56c569d6480ce60e7d20ae57ef6124cf178e
font_02_sfnt_off00009422.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9422 17952 bytes
SHA-256: 246c6922272d41494e51e19bf23b4efda7bcd8f2c30004585cf787fa7eb4c2a5

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