Malicious PDF — malware analysis report

Static analysis result for SHA-256 1075bddfba0c8b25…

MALICIOUS

PDF

33.1 KB Created: 2021-06-28 20:08:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: f31b7f27ed90b20e29e936d737364950 SHA-1: bc251e13cd6b4254797d20dfffbcde6cca181a0f SHA-256: 1075bddfba0c8b2516d793cf7a3a3b2aac9fae4159ea1e70afe2d49f5525d94c
82 Risk Score

Malware Insights

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

The PDF document contains multiple links and a lure related to game hacks and free items for popular games like Roblox and Coin Master. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' strongly indicates that the document's primary purpose is to redirect users to potentially malicious websites. The ML classifier also flagged this PDF as malicious with high confidence.

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/best-free-items-on-roblox-2021-game-hack PDF link annotation
    • https://tckontrola.hr/files/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://tckontrola.hr/files/coin-master-free-gold-cards-link_GM406889139.pdfIn PDF document text
    • https://tckontrola.hr/files/como-hackear-coin-master-2021-espaol_GM406889139.pdfIn PDF document text
    • http://tckontrola.hr/files/fps-hacks-roblox-aimbot-how-to-activate-aimbot_GM431946152.pdfIn PDF document text
    • https://tckontrola.hr/files/free-minecraft-skins-ps4_GM479516143.pdfIn PDF document text
    • https://tckontrola.hr/files/minecraft-auto-miner-hack_GM479516143.pdfIn PDF document text
    • https://tckontrola.hr/files/roblox-gift-card-online-free_GM431946152.pdfIn PDF document text
    • http://tckontrola.hr/files/coin-master-app-hacks_GM406889139.pdfIn PDF document text
    • https://tckontrola.hr/files/mc-update_GM479516143.pdfIn PDF document text
    • https://tckontrola.hr/files/roblox-accs-free_GM431946152.pdfIn PDF document text
    • https://tckontrola.hr/files/coin-master-free-spins-heaven_GM406889139.pdfIn PDF document text
    • http://tckontrola.hr/files/how-to-get-free-snacks-in-coin-master_GM406889139.pdfIn PDF document text
    • https://tckontrola.hr/files/how-to-get-free-things-on-roblox_GM431946152.pdfIn PDF document text
    • http://tckontrola.hr/files/free-spins-on-coin-master-app_GM406889139.pdfIn PDF document text
    • https://tckontrola.hr/files/coin-master-hack-apk-ios_GM406889139.pdfIn PDF document text
    • http://tckontrola.hr/files/roblox-troll-outfits-free_GM431946152.pdfIn PDF document text
    • http://tckontrola.hr/files/how-to-get-free-robux-for-real_GM431946152.pdfIn PDF document text
    • http://tckontrola.hr/files/robux-hack-inspect-2021_GM431946152.pdfIn PDF document text
    • http://tckontrola.hr/files/roblox-free-no-download_GM431946152.pdfIn PDF document text
    • http://tckontrola.hr/files/free-roblox-high-school-2-promo-codes_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_off00002da5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DA5 20988 bytes
SHA-256: 8ab9da361ab372cb73499b8e39956d575745fb201202725c8239118febed2cef
font_01_sfnt_off00005b1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B1F 19416 bytes
SHA-256: 7cae078ffece276d115bdea0c39b1f2116ed78dcd3f5e0925ffaccf139e28634

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