Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7df87956c03ba3f…

MALICIOUS

PDF

42.9 KB Created: 2021-06-03 14:05:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: bacfb5ca072cefd207ad4023dc475526 SHA-1: fe53313923e937747bab65f2816ee4cc20405972 SHA-256: d7df87956c03ba3fda51546dca3abb32543fc70e096025b3af19656d150c2be1
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for a 'free generator / game hack' which redirects to the malicious URL https://netcdn.online/app/479516143/minecraft-free-minecoins-game-hack. This URL is likely intended to deliver a malicious payload or lead to a phishing page. The presence of numerous other similar URLs within the document body further supports this malicious intent. No scripts were extracted, but the document's structure and embedded links indicate a social engineering tactic to trick users into visiting a compromised site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9874

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.online/app/479516143/minecraft-free-minecoins-game-hack PDF link annotation
    • http://elibrary.smknesbu.sch.id/repository/roblox-free-clothes-hack_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/moonactive-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/minecraft-dungeons-free_GM479516143.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/free-robux-easy-and-fast_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/game-give-free-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/games-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/coin-master-rewards-free-spins_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/roblox-earn-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/minecraft-free-download-windows-10_GM479516143.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/free-dominus-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/robux-matchcomfree-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/free-minecraft-skins_GM479516143.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/http-bit-ly-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/free-30-tiktok-likes_GM835599320.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/coin-master-hack-without-verification-2021_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/coin-master-hack-no-download_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/free-robux-come_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/lazyblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/earn-robux-now_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_004_off00004f8e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F8E 24680 bytes
SHA-256: 36e20b9c5dd770ae0e6cb5859ef2790f28e416b62fc844218a992ae6339d6c76
font_01_sfnt_off000086f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86F1 17712 bytes
SHA-256: 84922fa40070066ef4f1a201e85f9de45244526ee00faa1dc92053ed0f889265

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