Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f6533c263768f68…

MALICIOUS

PDF

34.4 KB Created: 2021-06-30 17:11:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: c049ecf32ad1811431a6d02e5b7f9438 SHA-1: 0b22433e88976722ff92491e9ff2248817adac24 SHA-256: 0f6533c263768f68b1329bddec104a83d200fa2e92862bfd651476ca9d4ec1d3
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-confidence heuristic indicating it links to a 'free generator / game hack' redirector, specifically http://netcdn.co/app/479516143/minecraft-free-ios-game-hack. The document body also contains this URL and numerous other links to game-related hacks and generators. This suggests the primary purpose is to lure users to click these links, likely leading to a malicious website or the download of a secondary payload. No scripts were extracted, but the presence of embedded URLs and the ML classifier strongly indicate malicious intent.

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/479516143/minecraft-free-ios-game-hack PDF link annotation
    • https://www.advancissurgical.com/uploads/files/files/roblox-robux-pastebin-hack_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/irobux-fun-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/200-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/coin-master-golden-card-hack_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/free-roblox-account-getter-v3rmillion_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/coin-master-daily-free-cards_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/free-roblox-hoods_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/free-spin-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/how-to-get-hair-for-free-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/coin-master-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/coin-master-app-free-download_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/robux-hack-me_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/coinmaster-gps-user-review-coinmaster-coin-master-hack-pagedemo-index_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/free-free-robux_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/free-robux-without-downloading_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/apocalypse-rising-roblox-cheats_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/minecraft-bedrock-hacks-windows-10_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_off00003554.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3554 21664 bytes
SHA-256: 94a490774b740e9cf0a9a58bc656266fd8e782486f5ba0f75140ddee728cd686
font_01_sfnt_off000064ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64AC 17996 bytes
SHA-256: c69302d64d01fed68f7faa121aa3d2ae3c207c1a6baca3325fd70ae8fd84539d

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