Malicious PDF — malware analysis report

Static analysis result for SHA-256 3fc0619cae6aeeba…

MALICIOUS

PDF

33.6 KB Created: 2021-07-06 08:29:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: c58e852f80dfaa681b5a83a624ca9196 SHA-1: 80f1b955ff334692504e65cc405daf87704538e2 SHA-256: 3fc0619cae6aeebab4af0c612a514b18c46faa36f8005c371ebb6395b54243ec
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to game hacks, directing users to a suspicious URL. The ML classifier strongly indicates maliciousness. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect users to a malicious site, likely for credential harvesting or malware delivery.

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/406889139/coin-coin-master-hack-game-hack PDF link annotation
    • https://opac.heritagejkt.org/repository/robux-hacking-bans_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/how-to-get-minecraft-for-free-ios_GM479516143.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/free-coin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/how-to-cheat-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/coin-master-hack-spin-link_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/mobihack-roblox-hack_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/hacks-for-dragon-ball-ultimate-roblox_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/how-to-give-urself-items-in-roblox-with-cheat-engine_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/hacked-client-for-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/free-roblox-accounts-generator_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/coin-master-hack-spin-160-pro_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/how-to-make-a-badge-for-free-on-roblox_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/free-roblox-clothes-codes_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/roblox-free-800-robux-free_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/coin-master-daily-free-spin-and-coin-link-haktuts_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/download-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/free-coin-master-links_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/multiplayer-master-hack-coins_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/free-robux-generator-codes_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/roblox-hack-free-robux-hack-2021-ios-android-pc_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_002_off00002eba.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2EBA 22672 bytes
SHA-256: 1ef0e51a92e52a89da6066d2ef69c62edb34afc9eb2c68c12cb8556625bb264f
font_01_sfnt_off0000613e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x613E 18004 bytes
SHA-256: 2f3a5855c5bac228d8d27cc7f61b57eebad79d58a924e470a0477843dff273c7

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