Malicious PDF — malware analysis report

Static analysis result for SHA-256 76c07169206f5760…

MALICIOUS

PDF

33.4 KB Created: 2021-07-01 05:28:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: fb5ddfeb2677781bae26e51e95954b22 SHA-1: 52ef052b45de07681a3227d525970c186de6089e SHA-256: 76c07169206f57606e9920ac9a8a483e9f826cd27e1f7c070a3a40aab1dfb893
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to websites that promise free in-game currency or hacks for popular games. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' strongly indicates a social engineering tactic to trick users into visiting potentially malicious sites. While no scripts were directly extracted, the nature of the lures suggests a potential for JavaScript execution or further malicious downloads upon clicking the embedded URLs.

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/835599320/free-tiktok-followers-game-hack PDF link annotation
    • http://unifieo.br/images/free-uc-on-roblox_GM431946152.pdfIn PDF document text
    • http://unifieo.br/images/this-roblox-game-gives-you-free-robux_GM431946152.pdfIn PDF document text
    • http://unifieo.br/images/best-roblox-jailbreak-hack-2021_GM431946152.pdfIn PDF document text
    • http://unifieo.br/images/roblox-free-script-sir-meme_GM431946152.pdfIn PDF document text
    • http://unifieo.br/images/coin-master-hack-android-2021_GM406889139.pdfIn PDF document text
    • http://unifieo.br/images/free-robux-game-glicth_GM431946152.pdfIn PDF document text
    • http://unifieo.br/images/free-domnius-roblox_GM431946152.pdfIn PDF document text
    • http://unifieo.br/images/free-robux-kid-friendly-no-human-verification_GM431946152.pdfIn PDF document text
    • http://unifieo.br/images/free-spin-link_GM406889139.pdfIn PDF document text
    • http://unifieo.br/images/how-to-get-free-robux-without-doing-anything-2021_GM431946152.pdfIn PDF document text
    • http://unifieo.br/images/free-roblox-hack_GM431946152.pdfIn PDF document text
    • http://unifieo.br/images/roblox-hack-ios_GM431946152.pdfIn PDF document text
    • http://unifieo.br/images/free-roblox-account-getter_GM431946152.pdfIn PDF document text
    • http://unifieo.br/images/this-game-gave-me-free-robux_GM431946152.pdfIn PDF document text
    • http://unifieo.br/images/how-to-hack-roblox-robux-with-cheat-engine-62_GM431946152.pdfIn PDF document text
    • http://unifieo.br/images/hack-robux-free-iphone_GM431946152.pdfIn PDF document text
    • http://unifieo.br/images/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
    • http://unifieo.br/images/how-to-get-free-robux-without-email-address_GM431946152.pdfIn PDF document text
    • http://unifieo.br/images/roblox-cheat-enginefor-rodebix_GM431946152.pdfIn PDF document text
    • http://unifieo.br/images/free-minecraft-resource-packs_GM479516143.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_off0000301c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x301C 21788 bytes
SHA-256: 940f410c7acfea4361286971b53efe9de7f1b3d352adb19a4aae11bb7b87a395
font_01_sfnt_off00006009.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6009 18208 bytes
SHA-256: 1296ea9dd0716f58c925f51c46f953a057a7a3cac7b1460c677587e3a78a1cf9

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