Malicious PDF — malware analysis report

Static analysis result for SHA-256 f16177608538664b…

MALICIOUS

PDF

34.8 KB Created: 2021-07-05 14:42:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 86a25edb8a6567dd135365408d573c17 SHA-1: f9a12c46295130e8061a7dea3cececb316e9decb SHA-256: f16177608538664b408884a6252836316bfce92e9ed8c501dc8de7aab45d8b89
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document employs a common lure of free in-game currency and hacks to entice users. It contains multiple embedded URLs, with a primary redirector identified at http://netcdn.tw/app/406889139/free-spin-link-for-coin-master-game-hack, which likely leads to a malicious payload or phishing site. The ML classifier strongly flagged this PDF as malicious, supporting the observed lure and redirection behavior.

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/free-spin-link-for-coin-master-game-hack PDF link annotation
    • https://www.ma-plast.hr/files/coin-master-free-coins-hack_GM406889139.pdfIn PDF document text
    • https://www.ma-plast.hr/files/coin-master-free-spins-2021-hack_GM406889139.pdfIn PDF document text
    • http://www.ma-plast.hr/files/huskybuscom-free-robux_GM431946152.pdfIn PDF document text
    • https://www.ma-plast.hr/files/roblox-groups-with-free-clothes_GM431946152.pdfIn PDF document text
    • https://www.ma-plast.hr/files/free-coins-and-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://www.ma-plast.hr/files/free-minecraft-pe-server_GM479516143.pdfIn PDF document text
    • http://www.ma-plast.hr/files/free-robux-com_GM431946152.pdfIn PDF document text
    • https://www.ma-plast.hr/files/roblox-free-military-clothes_GM431946152.pdfIn PDF document text
    • http://www.ma-plast.hr/files/free-roblox-com-passwords_GM431946152.pdfIn PDF document text
    • http://www.ma-plast.hr/files/coin-master-free-coins-no-human-verification_GM406889139.pdfIn PDF document text
    • https://www.ma-plast.hr/files/minecraft-games-online-free-no-download_GM479516143.pdfIn PDF document text
    • https://www.ma-plast.hr/files/cheat-codes-roblox-reason-to-die-101_GM431946152.pdfIn PDF document text
    • https://www.ma-plast.hr/files/new-op-roblox-assassin-aimbot-script-free_GM431946152.pdfIn PDF document text
    • https://www.ma-plast.hr/files/get-free-lives-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.ma-plast.hr/files/blox-fish-free-robux_GM431946152.pdfIn PDF document text
    • https://www.ma-plast.hr/files/where-can-i-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.ma-plast.hr/files/free-clothes-on-roblox-id_GM431946152.pdfIn PDF document text
    • http://www.ma-plast.hr/files/minecraft-hack-client-download_GM479516143.pdfIn PDF document text
    • http://www.ma-plast.hr/files/coin-master-hack-tool-without-verification_GM406889139.pdfIn PDF document text
    • https://www.ma-plast.hr/files/how-to-kill-everything-on-the-map-roblox-hack_GM431946152.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_002_off0000305f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x305F 23332 bytes
SHA-256: c1d54ce6ea5911825343b50fcd988f54b013c74eb62357c3afb308373833ee12
font_01_sfnt_off00006528.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6528 18344 bytes
SHA-256: 73296c36ae02266707d13b3c106b47ee8249e938a6a7036fcc30fdbaeed21dbb

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