Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f7224ffd8188d57…

MALICIOUS

PDF

35.1 KB Created: 2021-06-30 19:10:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 4921eebdbc8444de6dae9383c1d995a7 SHA-1: 21decba9220b82da71357ced49f5e8def1ac4e9b SHA-256: 9f7224ffd8188d57717dee33447a83b6b80ce25d88f7fd2ba24f738e39434f3a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links and embedded text promoting 'free Robux' or game hacks, which is a common lure for malicious content. The primary link directs to a known malicious redirector infrastructure, indicating a phishing or scam attempt. No scripts were extracted, but the document's structure and content strongly suggest a social engineering attack to redirect users to 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.co/app/431946152/free-online-robux-generator-no-surveys-game-hack In PDF document text
    • http://elearning.minkotabukittinggi.sch.id/__statics/gudangsoal/files/how-do-you-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://elearning.minkotabukittinggi.sch.id/__statics/gudangsoal/files/free-robux-offers_GM431946152.pdfIn PDF document text
    • http://elearning.minkotabukittinggi.sch.id/__statics/gudangsoal/files/coin-master-hack-apk-free-download_GM406889139.pdfIn PDF document text
    • http://elearning.minkotabukittinggi.sch.id/__statics/gudangsoal/files/real-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://elearning.minkotabukittinggi.sch.id/__statics/gudangsoal/files/minecraft-fly-hack_GM479516143.pdfIn PDF document text
    • http://elearning.minkotabukittinggi.sch.id/__statics/gudangsoal/files/links-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.minkotabukittinggi.sch.id/__statics/gudangsoal/files/free-robux-2021-unlimited-codes-for-kids_GM431946152.pdfIn PDF document text
    • http://elearning.minkotabukittinggi.sch.id/__statics/gudangsoal/files/minecraft-xbox-360-free_GM479516143.pdfIn PDF document text
    • http://elearning.minkotabukittinggi.sch.id/__statics/gudangsoal/files/minecraft-windows-10-hack-client-2021_GM479516143.pdfIn PDF document text
    • http://elearning.minkotabukittinggi.sch.id/__statics/gudangsoal/files/adopt-me-hack-roblox-money_GM431946152.pdfIn PDF document text
    • http://elearning.minkotabukittinggi.sch.id/__statics/gudangsoal/files/300-hundred-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.minkotabukittinggi.sch.id/__statics/gudangsoal/files/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.minkotabukittinggi.sch.id/__statics/gudangsoal/files/free-spin-online-tool-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.minkotabukittinggi.sch.id/__statics/gudangsoal/files/roblox-working-strucid-aimbot-hack-2021-agust_GM431946152.pdfIn PDF document text
    • http://elearning.minkotabukittinggi.sch.id/__statics/gudangsoal/files/roblox-hack-known-gui-5_GM431946152.pdfIn PDF document text
    • http://elearning.minkotabukittinggi.sch.id/__statics/gudangsoal/files/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://elearning.minkotabukittinggi.sch.id/__statics/gudangsoal/files/get-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.minkotabukittinggi.sch.id/__statics/gudangsoal/files/cheats-fr-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.minkotabukittinggi.sch.id/__statics/gudangsoal/files/free-robux-obby_GM431946152.pdfIn PDF document text
    • http://elearning.minkotabukittinggi.sch.id/__statics/gudangsoal/files/www-rubux_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_off00003257.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3257 22052 bytes
SHA-256: e3b23e179e8613c1cfa1e96bf63d5addb8b6cae26eac3cf78170398b2cac645e
font_01_sfnt_off00006351.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6351 19308 bytes
SHA-256: b217a72214d63520008b37ba8f8baaa0d0e4e4afaa59444451ad5ffe9f219a8a

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