Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b312d0d165c8b4e…

MALICIOUS

PDF

34.4 KB Created: 2021-07-03 19:14:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1cb14067bcc2e1a63f502c85df4cbd0e SHA-1: d538eb2329d0fd75bfd87c640de8c71272ccc469 SHA-256: 2b312d0d165c8b4eb6e479abae4d2e33b51821654656f44a86b8d90c3256f0d6
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to known malicious infrastructure, specifically promoting 'game hacks' and 'free generators' for popular games. The primary lure appears to be related to Roblox and Coin Master, with the document body and embedded URLs pointing to sites offering these cheats. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/431946152/how-to-hack-roblox-with-nmap-game-hack In PDF document text
    • http://new-era.com.tw/image/data/files/free-robux-only-today_GM431946152.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/coin-master-free-spins-link-blogspot-2021_GM406889139.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/minecraft-games-to-play-for-free_GM479516143.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/admin-roblox-hack-2021_GM431946152.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/free-roblox-hacks-for-jailbreak-2021_GM431946152.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/free-spins-coins-coin-master_GM406889139.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/twitter-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/how-to-make-a-minecraft-pe-server-for-free_GM479516143.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/script-executor-for-roblox-free_GM431946152.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/not-a-scam-free-robux_GM431946152.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/free-robux-for-kids-easy_GM431946152.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/treasure-hunt-simulator-roblox-hack_GM431946152.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/how-to-get-2021-2021-account-roblox-free_GM431946152.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/minecraft-free-apk-download-016-0_GM479516143.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/roblox-redeem-card-codes-free_GM431946152.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/free-robux-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/hack-coin-master-without-root_GM406889139.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/coin-master-free-spins-youthnow_GM406889139.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/hacks-arsenal-roblox-tampermonkey_GM431946152.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_off00003039.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3039 21684 bytes
SHA-256: c30c870445594986334bc710daad5f49e124436aa0fe1b9aba12ca87614d50ba
font_01_sfnt_off00005fc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FC0 19660 bytes
SHA-256: 60abb0333b4a545eddcbcfadbad7c2c13178b0f134c519033dad911c40c7d0a5

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