Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ced99cd7286ac74…

MALICIOUS

PDF

44.0 KB Created: 2021-06-08 18:05:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: cf85759a5aa1c5f9f4254108b05434a0 SHA-1: 17b74edbe01a1125700413191381786173ff2cfc SHA-256: 5ced99cd7286ac741642bd0206d472fb11bdc5a2843f89f086bcfdc80aafab8e
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a high-confidence heuristic indicating it links to a 'free generator / game hack' redirector, specifically https://netcdn.tw/app/431946152/best-roblox-games-to-hack-game-hack. The document body, though partially corrupted, also contains this URL and other suspicious links related to game hacking. This suggests a social engineering lure to drive users to potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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 https://netcdn.tw/app/431946152/best-roblox-games-to-hack-game-hack PDF link annotation
    • https://futureselect.com.au/wp-content/uploads/fsqm-files/free-robux-promo-codes-2021-december_GM431946152.pdfIn PDF document text
    • https://futureselect.com.au/wp-content/uploads/fsqm-files/ip-grabber-hack-for-roblox_GM431946152.pdfIn PDF document text
    • https://futureselect.com.au/wp-content/uploads/fsqm-files/how-to-hack-your-friends-robux_GM431946152.pdfIn PDF document text
    • https://futureselect.com.au/wp-content/uploads/fsqm-files/minecraft-server-hacks_GM479516143.pdfIn PDF document text
    • https://futureselect.com.au/wp-content/uploads/fsqm-files/22-500-free-robux_GM431946152.pdfIn PDF document text
    • https://futureselect.com.au/wp-content/uploads/fsqm-files/probability-that-the-new-roblox-item-will-be-free_GM431946152.pdfIn PDF document text
    • https://futureselect.com.au/wp-content/uploads/fsqm-files/free-roblox-ad-design_GM431946152.pdfIn PDF document text
    • https://futureselect.com.au/wp-content/uploads/fsqm-files/minecraft-windows-10-hacks_GM479516143.pdfIn PDF document text
    • https://futureselect.com.au/wp-content/uploads/fsqm-files/mine-minecraft-games-for-free_GM479516143.pdfIn PDF document text
    • https://futureselect.com.au/wp-content/uploads/fsqm-files/earn-free-robux-for-roblox_GM431946152.pdfIn PDF document text
    • https://futureselect.com.au/wp-content/uploads/fsqm-files/the-labyrinth-hack-roblox_GM431946152.pdfIn PDF document text
    • https://futureselect.com.au/wp-content/uploads/fsqm-files/get-free-robux-info_GM431946152.pdfIn PDF document text
    • https://futureselect.com.au/wp-content/uploads/fsqm-files/ive-been-hacked-on-roblox-what-now_GM431946152.pdfIn PDF document text
    • https://futureselect.com.au/wp-content/uploads/fsqm-files/roblox-apocalypse-rising-hack-october-2021_GM431946152.pdfIn PDF document text
    • https://futureselect.com.au/wp-content/uploads/fsqm-files/minecraft-on-computer-free_GM479516143.pdfIn PDF document text
    • https://futureselect.com.au/wp-content/uploads/fsqm-files/free-followers-on-tiktok_GM835599320.pdfIn PDF document text
    • https://futureselect.com.au/wp-content/uploads/fsqm-files/how-do-i-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • https://futureselect.com.au/wp-content/uploads/fsqm-files/roblox-i-want-to-break-free_GM431946152.pdfIn PDF document text
    • https://futureselect.com.au/wp-content/uploads/fsqm-files/roblox-island-royale-download-free_GM431946152.pdfIn PDF document text
    • https://futureselect.com.au/wp-content/uploads/fsqm-files/get-free-robux-in-roblox-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
stream_004_off00005133.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5133 24852 bytes
SHA-256: f8f9677cef92b30fc568d9b2fb6acd2056c6bea98e78d4040c672f51c56f41df
font_01_sfnt_off00008883.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8883 18548 bytes
SHA-256: a090d1f51abbb8984df17cd39d8e7ef5e6d985d7b816bf6762f308d33e31fd24

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