Malicious PDF — malware analysis report

Static analysis result for SHA-256 63e36eb5274d917b…

MALICIOUS

PDF

33.1 KB Created: 2021-06-19 21:59:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 776da21f0b7439df971fbc72562268d8 SHA-1: 66efc7487be361c3eb17f7a0f641639c41c86f5c SHA-256: 63e36eb5274d917b5f97ab12e98bfb3659b8aeadce6e5e4d234616f9f7e30bd8
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs, including one flagged as a 'free generator / game hack' redirector, indicating a lure for users seeking cheats or free items. The ML classifier strongly identified this PDF as malicious. While no scripts were explicitly extracted, the presence of numerous external links suggests the document's primary function is to redirect users to potentially malicious websites.

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-realms-free-trial-game-hack PDF link annotation
    • http://kermas.eu/images/coin-master-links-to-get-free-spins_GM406889139.pdfIn PDF document text
    • http://kermas.eu/images/roblox-dungeon-quest-hack-2021_GM431946152.pdfIn PDF document text
    • http://kermas.eu/images/free-roblox-accounts-v3rmillion-2021-august_GM431946152.pdfIn PDF document text
    • http://kermas.eu/images/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://kermas.eu/images/minecraft-classic-free_GM479516143.pdfIn PDF document text
    • http://kermas.eu/images/minecraft-windows-10-hacks_GM479516143.pdfIn PDF document text
    • http://kermas.eu/images/free-tiktok-followers-no-human-verification-or-survey_GM835599320.pdfIn PDF document text
    • http://kermas.eu/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://kermas.eu/images/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://kermas.eu/images/hack-coin-master-spin-android_GM406889139.pdfIn PDF document text
    • http://kermas.eu/images/united-gaming-net-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://kermas.eu/images/cute-free-roblox-clothes_GM431946152.pdfIn PDF document text
    • http://kermas.eu/images/roblox-avatar-girl_GM431946152.pdfIn PDF document text
    • http://kermas.eu/images/free-robux-money-codes-2021-july_GM431946152.pdfIn PDF document text
    • http://kermas.eu/images/how-can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://kermas.eu/images/best-free-roblox-outfits_GM431946152.pdfIn PDF document text
    • http://kermas.eu/images/wurst-client-download_GM479516143.pdfIn PDF document text
    • http://kermas.eu/images/roblox-hack-unlimited-money-pc_GM431946152.pdfIn PDF document text
    • http://kermas.eu/images/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://kermas.eu/images/roblox-generator_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_off00002e83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E83 22020 bytes
SHA-256: e58d9e2e64684d372d8467bf2573295c0f947b41dae4223efb37ff14449e67da
font_01_sfnt_off00005f3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F3C 18192 bytes
SHA-256: c84c0c9224042ec5c518f6bb4a140ed5e4ee0a480a1adfcfecce085ac4978d3d