Malicious PDF — malware analysis report

Static analysis result for SHA-256 2384aa5a2a3ec9e0…

MALICIOUS

PDF

33.8 KB Created: 2021-07-04 05:41:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: a52828be4c787366c9c817f54b3d2d1d SHA-1: b3385e7d792be238a5eba1d1a4b0fcb177a5c5fb SHA-256: 2384aa5a2a3ec9e0117cffab53d9ba38c63367baed7256753568cdd77c06118d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-severity heuristic firing for a 'free generator / game hack' redirect lure, pointing to the URL http://netcdn.tw/app/431946152/rbx-free-robux-game-hack. The document body also contains this URL and other links related to game hacks and free currency, indicating a social engineering attempt to trick users into visiting a potentially malicious site. No scripts were extracted, but the primary attack vector appears to be a phishing lure.

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/431946152/rbx-free-robux-game-hack PDF link annotation
    • https://miraller.com/upload/files/is-tiktok-app-free_GM835599320.pdfIn PDF document text
    • https://miraller.com/upload/files/speed-hacks-in-roblox_GM431946152.pdfIn PDF document text
    • https://miraller.com/upload/files/robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://miraller.com/upload/files/without-pokemon-go-free-promo-codes_GM1094591345.pdfIn PDF document text
    • https://miraller.com/upload/files/https-iosgodscom-topic-20218flipmastercoinshack_GM406889139.pdfIn PDF document text
    • https://miraller.com/upload/files/pubg-uc-india_GM1330123889.pdfIn PDF document text
    • https://miraller.com/upload/files/speed-simulator-hack-roblox_GM431946152.pdfIn PDF document text
    • https://miraller.com/upload/files/minecraft-realms-free_GM479516143.pdfIn PDF document text
    • https://miraller.com/upload/files/how-to-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://miraller.com/upload/files/free-backdoor-roblox-v3rm_GM431946152.pdfIn PDF document text
    • https://miraller.com/upload/files/tiktok-free-trial_GM835599320.pdfIn PDF document text
    • https://miraller.com/upload/files/how-do-you-hack-on-roblox-prison-life_GM431946152.pdfIn PDF document text
    • https://miraller.com/upload/files/free-modded-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • https://miraller.com/upload/files/how-do-you-send-a-roblox-fottage-of-someone-hacking_GM431946152.pdfIn PDF document text
    • https://miraller.com/upload/files/games-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://miraller.com/upload/files/minecraft-aimbot_GM479516143.pdfIn PDF document text
    • https://miraller.com/upload/files/coin-master-free-spin-and-coin-link-haktuts-hacking-news_GM406889139.pdfIn PDF document text
    • https://miraller.com/upload/files/jie-gaming-studio-free-robux_GM431946152.pdfIn PDF document text
    • https://miraller.com/upload/files/can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • https://miraller.com/upload/files/free-roblox-accounts-with-robux-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_off00002d0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D0D 23120 bytes
SHA-256: 2f7ffe6ff377c4ef1c21906d5756c241f30280a8a68b39dee22b6ad21c38f694
font_01_sfnt_off00005fe5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FE5 18716 bytes
SHA-256: df5c5e0cfb8f7f2dfb35d0ecea75bc73877d40549e98d215878e07f2572b6ccc

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