Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b4676985e1d6afb…

MALICIOUS

PDF

43.4 KB Created: 2021-05-15 04:42:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6dcabb528c50564834a258c3443d257d SHA-1: 5e1849d36de75eb820bcd4c7ec512bccb29d0ba2 SHA-256: 5b4676985e1d6afb6f0d540e4f69a3cc69efc0631cdeac59198ef872044f78ef
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, masquerading as game hacks and free generators. The primary malicious URL identified is https://netcdn.xyz/app/479516143/minecraft-toys-for-free-game-hack. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly indicate a social engineering attack designed to lead users to potentially harmful content or further malware downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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/minecraft-toys-for-free-game-hack In PDF document text
    • https://elearning.man1bengkalis.id/__statics/gudangsoal/files/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • https://elearning.man1bengkalis.id/__statics/gudangsoal/files/coin-master-pc-game-free-download_GM406889139.pdfIn PDF document text
    • https://elearning.man1bengkalis.id/__statics/gudangsoal/files/free-robux-without-verify_GM431946152.pdfIn PDF document text
    • https://elearning.man1bengkalis.id/__statics/gudangsoal/files/coin-master-rewards-2021_GM406889139.pdfIn PDF document text
    • https://elearning.man1bengkalis.id/__statics/gudangsoal/files/coin-master-hack-2021-android_GM406889139.pdfIn PDF document text
    • https://elearning.man1bengkalis.id/__statics/gudangsoal/files/get-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://elearning.man1bengkalis.id/__statics/gudangsoal/files/free-spins-coin-master-2021-app_GM406889139.pdfIn PDF document text
    • https://elearning.man1bengkalis.id/__statics/gudangsoal/files/easy-roblox-today_GM431946152.pdfIn PDF document text
    • https://elearning.man1bengkalis.id/__statics/gudangsoal/files/80-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.man1bengkalis.id/__statics/gudangsoal/files/coin-master-free-spin-link-app_GM406889139.pdfIn PDF document text
    • https://elearning.man1bengkalis.id/__statics/gudangsoal/files/how-to-get-free-minecraft-skins_GM479516143.pdfIn PDF document text
    • https://elearning.man1bengkalis.id/__statics/gudangsoal/files/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://elearning.man1bengkalis.id/__statics/gudangsoal/files/minecraft-bedrock-client_GM479516143.pdfIn PDF document text
    • https://elearning.man1bengkalis.id/__statics/gudangsoal/files/coin-master-free-spin-and-coin-link-today_GM406889139.pdfIn PDF document text
    • https://elearning.man1bengkalis.id/__statics/gudangsoal/files/how-to-get-minecraft-windows-10-edition-for-free_GM479516143.pdfIn PDF document text
    • https://elearning.man1bengkalis.id/__statics/gudangsoal/files/roblox-download-pc-free_GM431946152.pdfIn PDF document text
    • https://elearning.man1bengkalis.id/__statics/gudangsoal/files/http-coin-master-hack-club_GM406889139.pdfIn PDF document text
    • https://elearning.man1bengkalis.id/__statics/gudangsoal/files/coin-master-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • https://elearning.man1bengkalis.id/__statics/gudangsoal/files/free-robux-games-that-actually-work_GM431946152.pdfIn PDF document text
    • https://elearning.man1bengkalis.id/__statics/gudangsoal/files/coin-master-gold-cards-free_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000498b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x498B 23744 bytes
SHA-256: 3e3d9563519312cd5482b3419277fdd4736b6e4c4f5c765b652f0c93d98f077d
font_01_sfnt_off00007e48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E48 2856 bytes
SHA-256: 8c5d9bcb386d88c7f99323d8d482e46ea21dea038a5b842744dd5d39b26b2c44
font_02_sfnt_off0000881f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x881F 17888 bytes
SHA-256: 58cd9c25f2055972b1f3d8fd7725b840dc665585bc5f994aadd02011a7a39e9c

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