Malicious PDF — malware analysis report

Static analysis result for SHA-256 1edc7a390a8f11f0…

MALICIOUS

PDF

42.7 KB Created: 2021-06-03 06:17:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 68df648ab1f491a3b877d10ce284e285 SHA-1: d61be5d4c48db0e0a0ecedd017ae43a2de4d764d SHA-256: 1edc7a390a8f11f0db5a5aa49e3c735ef9672bfb4ef06c43550bd38397e584b2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting a 'free generator / game hack' for Coin Master. The primary malicious URL identified is https://netcdn.online/app/406889139/free-coins-coin-master-iphone-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly indicate a social engineering lure designed to lead users to potentially harmful content or further malware downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9874

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.online/app/406889139/free-coins-coin-master-iphone-game-hack In PDF document text
    • https://che.itk.ac.id/asset/backend/upload/ckeditor/files/minecraft-realms-free_GM479516143.pdfIn PDF document text
    • https://che.itk.ac.id/asset/backend/upload/ckeditor/files/free-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://che.itk.ac.id/asset/backend/upload/ckeditor/files/minecraft-bedrock-edition-free-with-java_GM479516143.pdfIn PDF document text
    • https://che.itk.ac.id/asset/backend/upload/ckeditor/files/my-roblox-account-was-hacked_GM431946152.pdfIn PDF document text
    • https://che.itk.ac.id/asset/backend/upload/ckeditor/files/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • https://che.itk.ac.id/asset/backend/upload/ckeditor/files/coin-master-free-daily-spins-link_GM406889139.pdfIn PDF document text
    • https://che.itk.ac.id/asset/backend/upload/ckeditor/files/coin-master-hack-2021-android-apk_GM406889139.pdfIn PDF document text
    • https://che.itk.ac.id/asset/backend/upload/ckeditor/files/freerobuxklub_GM431946152.pdfIn PDF document text
    • https://che.itk.ac.id/asset/backend/upload/ckeditor/files/free-spins-coinmaster_GM406889139.pdfIn PDF document text
    • https://che.itk.ac.id/asset/backend/upload/ckeditor/files/how-to-earn-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • https://che.itk.ac.id/asset/backend/upload/ckeditor/files/free-robux-just-click_GM431946152.pdfIn PDF document text
    • https://che.itk.ac.id/asset/backend/upload/ckeditor/files/free-tiktok-followers_GM835599320.pdfIn PDF document text
    • https://che.itk.ac.id/asset/backend/upload/ckeditor/files/free-codes-for-roblox-download-apk_GM431946152.pdfIn PDF document text
    • https://che.itk.ac.id/asset/backend/upload/ckeditor/files/free-robux-link_GM431946152.pdfIn PDF document text
    • https://che.itk.ac.id/asset/backend/upload/ckeditor/files/moon-static-coin-master-generator-hacks-free_GM406889139.pdfIn PDF document text
    • https://che.itk.ac.id/asset/backend/upload/ckeditor/files/how-to-get-free-daily-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://che.itk.ac.id/asset/backend/upload/ckeditor/files/coin-master-free-spins-haktuts_GM406889139.pdfIn PDF document text
    • https://che.itk.ac.id/asset/backend/upload/ckeditor/files/coin-master-cards-hack_GM406889139.pdfIn PDF document text
    • https://che.itk.ac.id/asset/backend/upload/ckeditor/files/free-roblox-clothes-for-your-avatar_GM431946152.pdfIn PDF document text
    • https://che.itk.ac.id/asset/backend/upload/ckeditor/files/how-to-change-your-roblox-username-for-free-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004f46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F46 23764 bytes
SHA-256: 90229f46690391ae5e8daff9d63b65980751d6d6f7559a7258320291a9af09e3
font_01_sfnt_off000084da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84DA 18052 bytes
SHA-256: 99dbb6b6b1c2666a4e7c95b3e8e09f0f63bf7a1f88354efaa1e52c2fabb98515

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