Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6b2d59369bcddf4…

MALICIOUS

PDF

36.0 KB Created: 2021-06-30 05:03:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: ca4bf6770777701a5f0a38dab709c795 SHA-1: 1deb5f55c284bc9c7f88b17787c1a52fb58bd4d9 SHA-256: e6b2d59369bcddf4df67154cf8edc90b5cd2d4e345478f7218f4359e5592763d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to 'free Robux' and includes multiple links to external websites, one of which is identified as a redirector for a game hack. The ML classifier also flagged the PDF as malicious. While no scripts were directly extracted, the presence of embedded URLs and the lure suggest an attempt to redirect users to malicious content, likely for phishing or malware distribution.

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/how-do-u-get-free-robux-2021-game-hack PDF link annotation
    • http://lib.stimykpn.ac.id//repository/tiktok-free-music_GM835599320.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/free-robux-app_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/village-4-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/not-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-hack-into-roblox-groups_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/cheats-on-natural-disater-survivle-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-free-spins-through-coin-pop_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/free-coins-and-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-get-free-coins-in-mcpe-master_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-free-ps3-download_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-hack-cheat-engine_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-login-page-free_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-minecraft-alt-generator_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/how-do-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/is-it-possible-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/hack-with-player-command-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-sites-like-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-do-you-make-clothes-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-royale-high-hack-club_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/who-to-get-free-robux-on-roblox_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_off000033a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33A4 22600 bytes
SHA-256: d38ac27978246ef6eb55fca2832bba3516cd86dd18e59db77e5c0406acaff906
font_01_sfnt_off000065f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65F9 19556 bytes
SHA-256: ee909949778bcc1eaeaae663f07e5a0770d7aed4eef67476ef7171e54895eba2

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