Malicious PDF — malware analysis report

Static analysis result for SHA-256 632bc5823aa6b530…

MALICIOUS

PDF

45.1 KB Created: 2021-05-11 20:13:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: eb2cf1804784002c12eb5d0b6d6eb4c1 SHA-1: 86aaeb3b6ab4e3e8960c04a521c2e4ff71f1a7c2 SHA-256: 632bc5823aa6b530fa3084d5a204e34f6a8f3982e73bc77718a44ef57f74650d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors, disguised as "free generators" or "game hacks" for popular games. The primary malicious URL identified is https://netcdn.xyz/app/479516143/aternos-free-minecraft-server-game-hack. The document body and embedded URLs suggest a phishing or scam campaign aiming to trick users into visiting these sites, likely to deliver further malware or conduct other malicious activities. No scripts were extracted, but the presence of malicious links and the ML classifier's high confidence score indicate a high likelihood of malicious intent.

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 https://netcdn.xyz/app/479516143/aternos-free-minecraft-server-game-hack In PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-spin-ml-link_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/robuxmatchcon_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/hackear-coin-master-sin-verificacion_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-robux-rewards_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/try-minecraft-free_GM479516143.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/op-rewards-robux_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/robuxlove-net-free-robux_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/minecraft-pe-hack-client_GM479516143.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/minecraft-thumbnail-maker-free_GM479516143.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-free-link-spin_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-coins-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-game_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/hack-coin-master-1_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-robux-app_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/robux-websites-that-work_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-hack-apk-35-8_GM406889139.pdfIn PDF document text
    • https://education.minecraftIn 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_off00004dc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4DC3 29180 bytes
SHA-256: 5a3fd5467a737fb080b2a5afc00e192edf86a298189e0d4d14e656def032e2ac
font_01_sfnt_off00008fab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FAB 17824 bytes
SHA-256: 04e228694d9982d1c7efe163f2653fab57675f1ecbbe7e635aa0b095f728f7e2

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