Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd77d7ad2f4ffb2e…

MALICIOUS

PDF

35.2 KB Created: 2021-06-19 18:00:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a329515d59675e9f3c85dddd21c6b4f5 SHA-1: bd2786d589f81329807c43cca3b0447dd37458e0 SHA-256: cd77d7ad2f4ffb2efcb0ffd5f103d2cd441ba4dc918bfd585d91572f88423263
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, specifically promoting 'free generators' and 'game hacks' for popular games like Roblox. The primary lure URL is http://netcdn.co/app/431946152/daniel-neward-youtube-roblox-hacks-game-hack, which is associated with malicious redirector infrastructure. The document body and embedded URLs reinforce this theme, aiming to trick users into downloading or accessing further malicious content. No scripts were extracted, but the presence of multiple malicious links and the ML classifier output strongly indicate a 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 http://netcdn.co/app/431946152/daniel-neward-youtube-roblox-hacks-game-hack In PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/rbxoffer-com-free-robux_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/free-robux-rewards_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/free-clip-art-from-google-roblox-birthday-8yo-boy_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/coin-master-hack-dot-xyz_GM406889139.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/minecraft-pe-apk-free-download_GM479516143.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/roblox-wall-design-hack_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/roblox-admin-panel-hack_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/roblox-no-login-free-play_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/speed-simulator-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/app-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/150-free-robux_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/coin-master-free-cards-and-spin-link_GM406889139.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/roblox-vehicle-simulator-free-money_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/free-robux-hack-no-human-verifaction-sponsored_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/roblox-free-no-download_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/coin-master-free-stuff_GM406889139.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/static-moonactive-net-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/roblox-code-lyoko-hack-xanafied_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/free-spins-for-coin-masters_GM406889139.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id//repository/best-minecraft-hacked-client-2021_GM479516143.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_off00003128.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3128 22220 bytes
SHA-256: e4d3970a900404c72e5c6468bc55506faa0d6a22491833c3bffd54fbb6250b8d
font_01_sfnt_off0000628e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x628E 19688 bytes
SHA-256: 7b42aa6315c43126e75e26821a602c953acbe304b8a75803af1db70e3f688817

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