Malicious PDF — malware analysis report

Static analysis result for SHA-256 37d2c6ec647f8cd4…

MALICIOUS

PDF

46.0 KB Created: 2021-06-03 05:32:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 7a4d2d689fd2d83df9afc4ecd1dcc6c4 SHA-1: 7dc2939a9f6f5190716697a92be2985b5a8e3c21 SHA-256: 37d2c6ec647f8cd405780c5c2dc100197858564cf0c845f64486b558783e9470
82 Risk Score

Malware Insights

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

The PDF contains a high-severity heuristic indicating it links to a game hack lure. The document body and extracted URLs reinforce this, pointing to a URL associated with 'coin-master-hack-2021-download-game-hack'. This suggests the PDF is designed to trick users into visiting a malicious site, likely for malware distribution or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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-master-hack-2021-download-game-hack PDF link annotation
    • https://www.tiancom.com.tw/upload/files/robux-com-free_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/minecraft-pe-free_GM479516143.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/hack-para-coin-master-sin-verification_GM406889139.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/tiktok-free-folowers-jio-phone-install-tamil_GM835599320.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/free-roblox-groups_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/how-to-hack-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/roblox-fun-robux_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/coin-master-hack-2021-apk_GM406889139.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/do-coin-master-hacks-work_GM406889139.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/coin-master-hack-2021-apk-download_GM406889139.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/free-minecraft-alt-accounts_GM479516143.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/hack-coin-master-net_GM406889139.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/get-free-robux-now_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/free-spin-coin-master-iphone_GM406889139.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/coin-master-free-gifts_GM406889139.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/free-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/coin-master-unlimited-spin-and-coin-hack_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
stream_004_off00005124.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5124 27048 bytes
SHA-256: 8e56b5f6306e0af12986a45c2d9a0b29ce215d3d3124d6713467e7573e0d6c90
font_01_sfnt_off00008fe7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FE7 18696 bytes
SHA-256: 01e33fa384fcd9559826a4aa1de189e20085b3e2fa6b70097625b29721cffd1e