Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ca3f1644892b38f…

MALICIOUS

PDF

33.6 KB Created: 2021-07-19 12:03:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 20177d336c4681feb46477d5d3b18ea8 SHA-1: a846e6040932787ff06f5cf92cf630425b8ba2e7 SHA-256: 5ca3f1644892b38f13ed373b5ebb65df9eda133a0480b0975c7c97e28aae8ade
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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/479516143/free-mods-for-minecraft-pe-game-hack PDF link annotation
    • https://planetzoe.hr/files/how-to-play-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • https://planetzoe.hr/files/free-coin-master-coins_GM406889139.pdfIn PDF document text
    • https://planetzoe.hr/files/how-to-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.planetzoe.hr/files/free-robux-games_GM431946152.pdfIn PDF document text
    • https://planetzoe.hr/files/free-tiktok-fans-no-human-verification-or-downloading-apps_GM835599320.pdfIn PDF document text
    • https://planetzoe.hr/files/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • https://planetzoe.hr/files/free-tiktok-followers-no-downloads_GM835599320.pdfIn PDF document text
    • https://www.planetzoe.hr/files/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://planetzoe.hr/files/get-free-tiktok-likes_GM835599320.pdfIn PDF document text
    • https://www.planetzoe.hr/files/coin-master-hack-without-verification_GM406889139.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
font_00_sfnt_off0000304c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x304C 22356 bytes
SHA-256: 590885c0bd4a6ed98c0cb0cdfd27a38acdc36f3ee3e903ea8e47288b6fbb7855
font_01_sfnt_off00006215.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6215 18040 bytes
SHA-256: 55677d50e7f19372d6dfb723d72c398dee248f925afb4425ab44c3bb4ecd28f4

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