Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5b021f3f47e5ea8…

MALICIOUS

PDF

43.6 KB Created: 2021-06-03 14:58:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 12c408cc9c52feafe5d98f7a9abc65ad SHA-1: 01dfb1b1cb807fbebdf8d6ae95f7a5c27518985f SHA-256: c5b021f3f47e5ea82f9b8797b7eafc83f9a974834125ca234fab38704c35b42c
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that are designed to lure users into clicking on them by promising game hacks and free currency. The primary malicious link identified is 'https://netcdn.online/app/406889139/coin-spin-link-game-hack'. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly suggest a malicious redirection attempt, likely to a phishing or malware distribution site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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/406889139/coin-spin-link-game-hack PDF link annotation
    • http://perpus.sdmtenggarong.sch.id/repository/roblox-hack-codes_GM431946152.pdfIn PDF document text
    • http://perpus.sdmtenggarong.sch.id/repository/minecraft-free-games-no-download_GM479516143.pdfIn PDF document text
    • http://perpus.sdmtenggarong.sch.id/repository/how-to-get-free-things-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.sdmtenggarong.sch.id/repository/coin-master-hack-version-download-2021-ios_GM406889139.pdfIn PDF document text
    • http://perpus.sdmtenggarong.sch.id/repository/free-stuff-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://perpus.sdmtenggarong.sch.id/repository/coin-master-fan-page-giveaway_GM406889139.pdfIn PDF document text
    • http://perpus.sdmtenggarong.sch.id/repository/daily-free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.sdmtenggarong.sch.id/repository/robloxheroxyz-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.sdmtenggarong.sch.id/repository/free-robux-safe_GM431946152.pdfIn PDF document text
    • http://perpus.sdmtenggarong.sch.id/repository/coin-master-hack-tool-v1-9-download-free-pc_GM406889139.pdfIn PDF document text
    • http://perpus.sdmtenggarong.sch.id/repository/collect-free-spin-linms-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.sdmtenggarong.sch.id/repository/how-to-hack-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://perpus.sdmtenggarong.sch.id/repository/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • http://perpus.sdmtenggarong.sch.id/repository/free-spin-coin-master-app-download_GM406889139.pdfIn PDF document text
    • http://perpus.sdmtenggarong.sch.id/repository/80-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.sdmtenggarong.sch.id/repository/best-free-minecraft-servers_GM479516143.pdfIn PDF document text
    • http://perpus.sdmtenggarong.sch.id/repository/rbxoffers-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.sdmtenggarong.sch.id/repository/how-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://perpus.sdmtenggarong.sch.id/repository/does-coin-master-hack-work_GM406889139.pdfIn PDF document text
    • http://perpus.sdmtenggarong.sch.id/repository/coin-master-claim-spins_GM406889139.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
stream_004_off00005012.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5012 25772 bytes
SHA-256: 0b83b6cee51e64c737b0e54aabf5b19ad3f930eb4c362c47c67f9c0a16ad6754
font_01_sfnt_off000089e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89E0 17560 bytes
SHA-256: 57c3f12a958430de31c97b672903314b9fe75859d953f53ff1226b802a2302e7

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