Malicious PDF — malware analysis report

Static analysis result for SHA-256 534bfd2a310b2870…

MALICIOUS

PDF

35.6 KB Created: 2021-06-29 16:54:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: f63afcfedc6080d0eef8362e10fe2d36 SHA-1: 645b86874be8857457ca2067b3410d294ca10cde SHA-256: 534bfd2a310b287001573d91ed91da1f054447a470a4d32d8b2cf13af40ce0c5
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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/rexic-roblox-hack-full-lua-game-hack PDF link annotation
    • http://elearning.mamduh.my.id/__statics/gudangsoal/files/cheat-roblox-lumber-tyccon_GM431946152.pdfIn PDF document text
    • http://elearning.mamduh.my.id/__statics/gudangsoal/files/roblox-raf-free_GM431946152.pdfIn PDF document text
    • http://elearning.mamduh.my.id/__statics/gudangsoal/files/roblox-vehicle-simulator-shakedown-hack-glitch_GM431946152.pdfIn PDF document text
    • http://elearning.mamduh.my.id/__statics/gudangsoal/files/tiktok-free-fans_GM835599320.pdfIn PDF document text
    • http://elearning.mamduh.my.id/__statics/gudangsoal/files/hack-work-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://elearning.mamduh.my.id/__statics/gudangsoal/files/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
    • http://elearning.mamduh.my.id/__statics/gudangsoal/files/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.mamduh.my.id/__statics/gudangsoal/files/how-to-hack-roblox-yammy_GM431946152.pdfIn PDF document text
    • http://elearning.mamduh.my.id/__statics/gudangsoal/files/earn-free-robux-online-2021_GM431946152.pdfIn PDF document text
    • http://elearning.mamduh.my.id/__statics/gudangsoal/files/roblox-xbox-360-free_GM431946152.pdfIn PDF document text
    • http://elearning.mamduh.my.id/__statics/gudangsoal/files/how-to-use-cheat-engine-undetected-on-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.mamduh.my.id/__statics/gudangsoal/files/free-minecraft-pe-server_GM479516143.pdfIn PDF document text
    • http://elearning.mamduh.my.id/__statics/gudangsoal/files/free-roblox-exploits-like-synapse_GM431946152.pdfIn PDF document text
    • http://elearning.mamduh.my.id/__statics/gudangsoal/files/hacking-mad-games-in-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.mamduh.my.id/__statics/gudangsoal/files/roblox-hack-script-admin_GM431946152.pdfIn PDF document text
    • http://elearning.mamduh.my.id/__statics/gudangsoal/files/10-weird-scary-hacker-storys-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.mamduh.my.id/__statics/gudangsoal/files/free-robux-site_GM431946152.pdfIn PDF document text
    • http://elearning.mamduh.my.id/__statics/gudangsoal/files/rbx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mamduh.my.id/__statics/gudangsoal/files/how-to-get-free-robux-2021-no-human-verification-pc_GM431946152.pdfIn PDF document text
    • http://elearning.mamduh.my.id/__statics/gudangsoal/files/how-to-hack-roblox-accounts-and-get-passwords-2021_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_off000032c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32C8 23056 bytes
SHA-256: 24a465b7055b57f50099f53ff6ba187a271e150c7c26a51b8d819d9fc86eaedb
font_01_sfnt_off00006672.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6672 19080 bytes
SHA-256: 9df7a103fcf264202745c69e017db4d79b1e94883c7ad649c5baff09de62991c

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