Malicious PDF — malware analysis report

Static analysis result for SHA-256 c399285f6ff2dc72…

MALICIOUS

PDF

34.1 KB Created: 2021-07-06 04:37:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 9853048bb2d7d46f908299d0f7091815 SHA-1: 093db85ccdae9cfdcd072bf647259f06effb02a5 SHA-256: c399285f6ff2dc72ace52f0023f5bc612ea83a237fcba1998916cf303c9f6274
102 Risk Score

Malware Insights

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

This PDF document contains numerous embedded URLs, many of which are related to game hacks and cheats for popular titles like Roblox and Coin Master. The presence of a 'Robux Hack Generator' in the document body and the high ML classifier score strongly suggest a malicious intent to lure users to these external links. The document likely serves as a phishing lure or a gateway to further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/robux-hack-generator-game-hack
    • http://grhasurya-pustaka.smkmuh2wates.sch.id//repository/how-to-hack-coins-in-mcpe-master_GM406889139.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id//repository/coin-master-free-coins-and-spins-daily_GM406889139.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id//repository/coin-master-hack-2021-download_GM406889139.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id//repository/coin-master-free-spins-2021-ios_GM406889139.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id//repository/daily-free-spins-coin-master-2021_GM406889139.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/hack-roblox-cheat-engine-63_GM431946152.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/free-spin-link-of-coin-master_GM406889139.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/hex-number-gives-free-robux-generator_GM431946152.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/robux-hack-2021_GM431946152.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id//repository/coin-master-apk-hack-2021_GM406889139.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/free-spin-and-win-coin-master_GM406889139.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id//repository/how-to-get-free-robux-by-playing-games_GM431946152.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id//repository/minecraft-pe-free-download-ios-no-jailbreak_GM479516143.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id//repository/free-minecraft-bedrock-server-hosting-24-7_GM479516143.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/no-human-verification-hack-for-coin-master_GM406889139.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/comment-faire-si-on-a-ete-hack-sur-roblox_GM431946152.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id//repository/free-robux-no-verification-or-survey-2021_GM431946152.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/minecraft-hack-2021_GM479516143.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/how-to-get-a-free-minecraft-account_GM479516143.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/how-to-hack-in-roblox-jailbreak-2021_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f53.bin
8089cc8993bb9d33e8bb6aac284425daf497a4296dfeb9cefe76bb796011a8d4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2F53 22184 bytes
font_01_sfnt_off000060ae.bin
6a2f4fb47bcac7a1427eb84fb186ae35d3638566a93e34d85c8a35338f058712		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60AE 18824 bytes

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