Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5b48673f89e5877…

MALICIOUS

PDF

34.2 KB Created: 2021-07-03 23:26:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 00e4d544151673596bea8950b43ee458 SHA-1: e471b0f6496cdd0fdc330d68925a20238f412510 SHA-256: d5b48673f89e587715dfa8dcc7e76cead95b4c01e97f164b393365b5b03cdfbb
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'free generator' or 'game hack' lures for popular games. The primary link, http://netcdn.tw/app/431946152/free-robux-bettergenerator-us-game-hack, is identified as a malicious redirector. The document's content and embedded URLs strongly suggest a phishing or scam attempt to lure users into visiting potentially harmful sites.

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/free-robux-bettergenerator-us-game-hack In PDF document text
    • https://new-era.com.tw/image/data/files/how-to-get-free-robux-on-roblox-2021-no-hacks_GM431946152.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/gamesofficenet-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/coin-master-hack-tool-ios_GM406889139.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/roblox-april-fools-hack_GM431946152.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/roblox-card-code-generator-download-free_GM431946152.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/coin-master-hack-app-2021_GM406889139.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/games-that-give-free-robux_GM431946152.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/roblox-administrator-badge-hack-2021_GM431946152.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/minecraft-bedrock-download-pc-free_GM479516143.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/free-roblox-money_GM431946152.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/roblox-scam_GM431946152.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/wurst-client-112-2_GM479516143.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/who-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/minecraft-pocket-edition-free-ios_GM479516143.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/coin-master-2021_GM406889139.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/free-coins-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/coin-master-free-generator_GM406889139.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/how-to-get-minecraft-for-free-on-nintendo-switch_GM479516143.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/roblox-dayz-cheat-codes-2021_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_off00003017.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3017 22124 bytes
SHA-256: ed7ed86b069922c51b454df484c8a977f51a934db6e7bd5c6d37cb55cff4df5b
font_01_sfnt_off00006144.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6144 18820 bytes
SHA-256: 9fab21d4e51b13f90e442f75cea30556eb20d77f18dcb370b3862119b984b385

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