Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8567e102d1647a6…

MALICIOUS

PDF

43.4 KB Created: 2021-06-09 08:59:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 47bf3a1c7f913de4699334232a4219b2 SHA-1: afd4ec6c567b52a52bf2b182f7130783ec86de5c SHA-256: d8567e102d1647a647fea4e70d92fdd921e6d8b0d14b8a34f1a81d2ea653a622
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 0.9865

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/roblox-admin-gui-hack-game-hack PDF link annotation
    • https://limebug.com/media/storage/editor/files/free-roblox-templates_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/how-to-get-free-roblox-premium_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/how-to-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/op-hacks-roblox_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/how-to-get-a-free-minecraft-account_GM479516143.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/free-fire-coin-master_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/get-me-free-robux_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/coinmaster-hack_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/free-roblox-hack_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/how-to-get-free-things-on-roblox_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/coin-master-villages_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/roblox-games-free_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/static-moonactive-net-rewards-2021_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/free-group-roblox_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/minecraft-116-free_GM479516143.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/free-coins-for-flip-master-online_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/free-roblox-accessories_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/free-robux-no-email_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_off00004d5f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D5F 24524 bytes
SHA-256: ae4fd8790e2f75a9dceb67258b36d2455770e50b5f874aa51b86c8f73b760e62
font_01_sfnt_off0000852d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x852D 18876 bytes
SHA-256: 5b96cbc89e8d1dfb89c2438c15a73ec30494847bdc6b5bf00bea85f5d1962fc3

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