Malicious PDF — malware analysis report

Static analysis result for SHA-256 a22f60ef4cf8ad60…

MALICIOUS

PDF

35.2 KB Created: 2021-06-28 04:25:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: ad34c2aa8649646cf3ec6d44362978d9 SHA-1: 57156e9897d92584218db3d621872cd119d47f28 SHA-256: a22f60ef4cf8ad601476dbbcd726ed95d48d58e0f6585672a544947eb7a0b7f2
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a game hack lure to trick users into clicking on external links. The primary link, http://netcdn.co/app/431946152/hacks-on-roblox-to-change-ur-look-game-hack, is presented as a way to modify game appearances, but it is highly likely to lead to a malicious download or a phishing page. No scripts were extracted, but the PDF structure and embedded URLs strongly indicate a social engineering attack.

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.co/app/431946152/hacks-on-roblox-to-change-ur-look-game-hack PDF link annotation
    • http://perpus.stmik-im.ac.id/repository/cheat-engine-la-roblox-para-hilesi-nasil-yapilir_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/rewards-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/how-to-hack-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/uprobuxcom-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/groups-that-give-free-robux-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/free-spins-coin-master-2021-hack_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/how-to-hack-roblox-with-lucky-patcher-2021_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/hacks-for-roblox-high-school_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/roblox-nation-com-hack_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/free-coin-master-account_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/hack-script-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/how-to-get-free-robux-apple-ipad_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/how-to-enter-paid-games-for-free-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/roblox-roghoul-legendary-hack_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/roblox-robux-generator-tool_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/free-robux-with-no-survey_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/daily-free-coin-and-spin-link-for-coin-master_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_off00003255.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3255 22648 bytes
SHA-256: 8981be78a29a38b628bebaeacdb03a493081f405f4c37282918ea89730df5e26
font_01_sfnt_off00006525.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6525 18820 bytes
SHA-256: 240d50e1a4980150cdc0ac45b66a395d7f59e6be5a56687d6a697310de4dadb7

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