Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3e8f9131238bc77…

MALICIOUS

PDF

34.5 KB Created: 2021-07-06 07:42:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 66c69f06e9cb01611aaec3810d9d1b2a SHA-1: af78eeaff4ca26e3ae8af728eb545ebf10990883 SHA-256: f3e8f9131238bc771aa5269627e9f9d3983053176b684f6a0bf456ebe6085f68
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites, with a primary lure related to 'game hacks' and 'free Robux'. The ML classifier strongly indicates maliciousness, and the presence of these links suggests a phishing or malware distribution attempt. No scripts were extracted, but the document's structure and embedded URLs point towards a social engineering attack.

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.tw/app/431946152/how-to-get-more-robux-game-hack PDF link annotation
    • https://shjbottle.com/upload/files/minecraft-tower-defense-hacked_GM479516143.pdfIn PDF document text
    • https://shjbottle.com/upload/files/free-red-jacket-roblox-that-is-actually-free_GM431946152.pdfIn PDF document text
    • https://shjbottle.com/upload/files/how-to-get-minecraft-for-free-on-ipad_GM479516143.pdfIn PDF document text
    • https://shjbottle.com/upload/files/free-clothes-in-roblox-2021_GM431946152.pdfIn PDF document text
    • https://shjbottle.com/upload/files/minecraft-kill-aura_GM479516143.pdfIn PDF document text
    • https://shjbottle.com/upload/files/minecraft-world-free-download_GM479516143.pdfIn PDF document text
    • https://shjbottle.com/upload/files/who-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://shjbottle.com/upload/files/how-to-get-free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • https://shjbottle.com/upload/files/roblox-adopt-me-hack_GM431946152.pdfIn PDF document text
    • https://shjbottle.com/upload/files/send-me-500-2021-spins_GM406889139.pdfIn PDF document text
    • https://shjbottle.com/upload/files/how-to-get-everything-free-on-roblox_GM431946152.pdfIn PDF document text
    • https://shjbottle.com/upload/files/how-t-oget-ant-free-robux_GM431946152.pdfIn PDF document text
    • https://shjbottle.com/upload/files/toolbox-for-minecraft-pe-mod-apk_GM479516143.pdfIn PDF document text
    • https://shjbottle.com/upload/files/free-coin-and-spin-for-coin-master_GM406889139.pdfIn PDF document text
    • https://shjbottle.com/upload/files/minecraft-for-free-apk_GM479516143.pdfIn PDF document text
    • https://shjbottle.com/upload/files/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
    • https://shjbottle.com/upload/files/free-coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://shjbottle.com/upload/files/roblox-phantom-forces-cheats-aimbot_GM431946152.pdfIn PDF document text
    • https://shjbottle.com/upload/files/gamesofficenet-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://shjbottle.com/upload/files/minecraft-windows-10-edition-free_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002e11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E11 23128 bytes
SHA-256: 82e97b8263375afa82031af12d426f310b9721e6915724c6f513a10ba170f449
font_01_sfnt_off000061ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61CA 19016 bytes
SHA-256: 6aa127ff16da2a4872f87fb8bac29a815e7536eb149385d076fe202f8a47623a

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