Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5e4335031afea99…

MALICIOUS

PDF

34.2 KB Created: 2021-07-05 12:07:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: fb5f748e492f34496a1be45ce9618d4e SHA-1: e444bc0ec3c3a063b2ad35e3b1fa2bf23c7f45de SHA-256: a5e4335031afea992eeb6591d1070829e77e384cdebe176b8cedab80d03effd9
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.tw/app/406889139/coin-master-free-coins-game-hack PDF link annotation
    • http://digilib-ppsunisma.ac.id/repository/www-bloxy-world-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/how-to-hack-jailbreak-roblox-ios_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/free-minecraft-survival-server_GM479516143.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/what-game-does-not-hack-you-when-you-get-robux_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/roblox-eat-or-diy-game-hack_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/how-to-get-a-free-group-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/free-roblox-characters_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/roblox-always-jump-hack_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/robux-hack-computer-no-app-download_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/coin-master-hack-iosgods_GM406889139.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/free-robux-generator_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/how-to-hack-money-in-roblox-lumber-tycoon-2_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/da-hood-cheats-roblox_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/lumber-tycoon-2-glitch-to-get-free-robux-robuxian_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/how-to-get-free-robux-on-iphone_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/how-to-get-a-free-minecraft-account_GM479516143.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/neil-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/coin-master-free-coins-hack_GM406889139.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/free-virtual-code-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_off00002fab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FAB 23264 bytes
SHA-256: 9a3200c0e7cabb79d1e991464ad64d5fe9ce4ca0ba4f959eeae193ba83e65105
font_01_sfnt_off000063bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63BC 17996 bytes
SHA-256: 2ec206c530faa3d40eac36f14655b3e9b935e9ff12c648634e177d5bc9421463

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