Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3534013995ab14f…

MALICIOUS

PDF

47.8 KB Created: 2021-05-12 00:00:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: b369f0e07a02174fe190e237e723c080 SHA-1: 30b566b09ae30c781a6becb66becbc4657e5d10b SHA-256: f3534013995ab14fc97a078b827ab48ea67fd129c17a47d5af23428785426a02
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links and a heuristic firing for a 'free generator / game hack' lure, indicating a social engineering attempt to redirect users to potentially malicious content. The document body, though heavily obfuscated, contains references to game hacks and generators, reinforcing this lure. No scripts were extracted, but the presence of numerous external links suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9013

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.xyz/app/431946152/how-to-change-your-name-on-roblox-for-free-game-hack PDF link annotation
    • https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/minecraft-free-reddit_GM479516143.pdfIn PDF document text
    • https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/coin-master-hack-app-2021-download_GM406889139.pdfIn PDF document text
    • https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/coin-master-hack-apk-free-download_GM406889139.pdfIn PDF document text
    • https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/grabpoints-robux_GM431946152.pdfIn PDF document text
    • https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/cute-free-roblox-outfits_GM431946152.pdfIn PDF document text
    • https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/download-coin-master-apk-hack_GM406889139.pdfIn PDF document text
    • https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/claim-roblox_GM431946152.pdfIn PDF document text
    • https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/free-premium-roblox_GM431946152.pdfIn PDF document text
    • https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/win-free-robux_GM431946152.pdfIn PDF document text
    • https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/coin-master-hack-apk-no-fb-login_GM406889139.pdfIn PDF document text
    • https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/minecraft-free-minecraft_GM479516143.pdfIn PDF document text
    • https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/wahoogaming-co-free-robux_GM431946152.pdfIn PDF document text
    • https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/coin-master-code-hack_GM406889139.pdfIn PDF document text
    • https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/coin-master-400-spin-link_GM406889139.pdfIn PDF document text
    • https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004b1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B1C 26772 bytes
SHA-256: 23d48c569266677adeb9d4f0b6e20ebe0924ac3c11a3974d3eeb9927e6416c9f
font_01_sfnt_off00008873.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8873 3928 bytes
SHA-256: 8621c8d502ef3782778d9f8a6275bb869c86817d512651ca4fd19fb1e249c467
font_02_sfnt_off00009557.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9557 19356 bytes
SHA-256: 46dbaf38c2934d32573e6b2165b3ea5430dcd60e12112d7b0d2bfe059cc09281