Malicious PDF — malware analysis report

Static analysis result for SHA-256 72b05cde36515a02…

MALICIOUS

PDF

45.9 KB Created: 2021-06-11 04:24:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-28
MD5: 2f7dc65251a52cc1c2324583bd0aa782 SHA-1: 60c577f4709fc50c7af115180913730fe5a8f2c2 SHA-256: 72b05cde36515a024eafd3c1b0c64f5f15e60251c867b8c56a2a2c4af0e4cd1b
200 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

Heuristics 5

  • 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.
  • Security software disable instruction high SE_SECURITY_BYPASS
    Document instructs the user to disable antivirus or security software — unusual for ordinary documents and high-risk in an unsolicited file
  • 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.tw/app/431946152/free-robux-spam-sentenace-game-hack In PDF document text
    • http://alazhar-university.ac.id/aplikasi/perpustakaan/repository/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://alazhar-university.ac.id/aplikasi/perpustakaan/repository/real-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://alazhar-university.ac.id/aplikasi/perpustakaan/repository/coin-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://alazhar-university.ac.id/aplikasi/perpustakaan/repository/coin-master-hack-tool-without-verification_GM406889139.pdfIn PDF document text
    • http://alazhar-university.ac.id/aplikasi/perpustakaan/repository/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://alazhar-university.ac.id/aplikasi/perpustakaan/repository/free-robux-websites-no-human-verification_GM431946152.pdfIn PDF document text
    • http://alazhar-university.ac.id/aplikasi/perpustakaan/repository/get-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://alazhar-university.ac.id/aplikasi/perpustakaan/repository/how-to-hack-coin-master-computer_GM406889139.pdfIn PDF document text
    • http://alazhar-university.ac.id/aplikasi/perpustakaan/repository/free-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • http://alazhar-university.ac.id/aplikasi/perpustakaan/repository/roblox-promo-codes-2021-robux_GM431946152.pdfIn PDF document text
    • http://alazhar-university.ac.id/aplikasi/perpustakaan/repository/free-robux-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://alazhar-university.ac.id/aplikasi/perpustakaan/repository/minecraft-18-9-hacked-client_GM479516143.pdfIn PDF document text
    • http://alazhar-university.ac.id/aplikasi/perpustakaan/repository/free-pet-food-for-coin-master_GM406889139.pdfIn PDF document text
    • http://alazhar-university.ac.id/aplikasi/perpustakaan/repository/minecraft-free-no-virus_GM479516143.pdfIn PDF document text
    • http://alazhar-university.ac.id/aplikasi/perpustakaan/repository/javascript-free-robux_GM431946152.pdfIn PDF document text
    • http://alazhar-university.ac.id/aplikasi/perpustakaan/repository/wurst-18-9_GM479516143.pdfIn PDF document text
    • http://alazhar-university.ac.id/aplikasi/perpustakaan/repository/guuudd-info-roblox-hack_GM431946152.pdfIn PDF document text
    • http://alazhar-university.ac.id/aplikasi/perpustakaan/repository/coin-master-free-spins-1-coin-master_GM406889139.pdfIn PDF document text
    • http://alazhar-university.ac.id/aplikasi/perpustakaan/repository/como-hackear-robux-en-roblox-2021-facil-y-rapido_GM431946152.pdfIn PDF document text
    • http://alazhar-university.ac.id/aplikasi/perpustakaan/repository/google-roblox-games_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
stream_004_off000052e5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x52E5 25884 bytes
SHA-256: 76e0628bfbeb834292fb06cab12a75c0a6467ab47c89a7179848684ea89eedde
font_01_sfnt_off00008f53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F53 18780 bytes
SHA-256: 9b527c022b0fd28cd49a19a7c89cbdff636edc90333f05396498769ff5ffe1bc

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