Malicious PDF — malware analysis report

Static analysis result for SHA-256 16995be16e945678…

MALICIOUS

PDF

34.1 KB Created: 2021-07-04 00:31:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 78b9a215d366e8b2d7c6c3537c7b4902 SHA-1: 94b1a19b3603b71ccd3055026886f7feb8d7a133 SHA-256: 16995be16e94567851668cd153e914d61b741801d90d2bb35e65ea3cd1df9653
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-severity heuristic indicating it links to a game hack redirector, specifically mentioning 'coin-master-hack-no-survey-or-verification-game-hack'. The document body and embedded URLs reinforce this theme, pointing to various game-related exploits and hacks. While no scripts were directly extracted, the PDF structure and embedded links suggest a social engineering attack to redirect users to malicious sites.

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-master-hack-no-survey-or-verification-game-hack PDF link annotation
    • https://3qblocks.com.tw/image/data/files/tool4u-vip-ff-hack-roblox_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/undetected-cheat-engine-for-roblox_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/near-tiktok-free-account_GM835599320.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/roblox-teleport-hack_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/how-to-get-free-robux-5-million_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/300-daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/free-robux-website-glitch_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/minecraft-reach-hack_GM479516143.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/promo-code-free-robux_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/electrification-free-free-robux_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/why-tiktok-free-download_GM835599320.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/yummers-free-robux_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/roblox-northern-frontier-hack_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/coin-master-hack-apk-33-download_GM406889139.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/free-minecraft-windows-10-account_GM479516143.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/coin-master-spin-pattern_GM406889139.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/veil-roblox-exploit-free_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/free-clothing-on-roblox_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/coin-master-invite-friends-free-spins_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_off0000314d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x314D 21932 bytes
SHA-256: 7e694c07ec59e3565619543c560825414864511c8d48b5799d8f179a37b8d300
font_01_sfnt_off00006175.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6175 18572 bytes
SHA-256: 3714ff820157558559e7d0653201827560acd429746c0784f855fbf1e368d380

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