Malicious PDF — malware analysis report

Static analysis result for SHA-256 474c8e6610233486…

MALICIOUS

PDF

35.2 KB Created: 2021-07-04 07:00:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 4d88602aee9e54d16544527fd3022c41 SHA-1: 6c52a3da28b883943998ddba295a9d752bf37f0b SHA-256: 474c8e6610233486ff39382c646c1784ec50ff1d761625bfafa3ecc341ad88e5
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one to a known malicious redirector infrastructure at http://netcdn.tw/app/406889139/coin-master-free-daily-spins-today-game-hack. The document body and embedded URLs suggest a lure for game-related cheats or hacks, which is a common social engineering tactic. The presence of multiple redirector links indicates a strong intent to lead the user to potentially harmful content.

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.tw/app/406889139/coin-master-free-daily-spins-today-game-hack In PDF document text
    • https://if.itk.ac.id/asset/backend/upload/ckeditor/files/coin-master-card-collection-hack-apk_GM406889139.pdfIn PDF document text
    • https://if.itk.ac.id/asset/backend/upload/ckeditor/files/is-roblox-studio-free_GM431946152.pdfIn PDF document text
    • https://if.itk.ac.id/asset/backend/upload/ckeditor/files/free-minecraft-capes-no-mods_GM479516143.pdfIn PDF document text
    • https://if.itk.ac.id/asset/backend/upload/ckeditor/files/john-doe-hacker-on-roblox_GM431946152.pdfIn PDF document text
    • https://if.itk.ac.id/asset/backend/upload/ckeditor/files/free-hack-engines-for-roblox_GM431946152.pdfIn PDF document text
    • https://if.itk.ac.id/asset/backend/upload/ckeditor/files/how-to-make-a-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://if.itk.ac.id/asset/backend/upload/ckeditor/files/free-spins-october-28-2021-coin-master_GM406889139.pdfIn PDF document text
    • https://if.itk.ac.id/asset/backend/upload/ckeditor/files/robux-converter_GM431946152.pdfIn PDF document text
    • https://if.itk.ac.id/asset/backend/upload/ckeditor/files/free-robux-catalog-items_GM431946152.pdfIn PDF document text
    • https://if.itk.ac.id/asset/backend/upload/ckeditor/files/robux-free-online_GM431946152.pdfIn PDF document text
    • https://if.itk.ac.id/asset/backend/upload/ckeditor/files/free-robux-no-verification-no-download-2021_GM431946152.pdfIn PDF document text
    • https://if.itk.ac.id/asset/backend/upload/ckeditor/files/invisible-hack-roblox_GM431946152.pdfIn PDF document text
    • https://if.itk.ac.id/asset/backend/upload/ckeditor/files/free-roblox-money_GM431946152.pdfIn PDF document text
    • https://if.itk.ac.id/asset/backend/upload/ckeditor/files/toolbox-for-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • https://if.itk.ac.id/asset/backend/upload/ckeditor/files/how-do-we-get-free-robux_GM431946152.pdfIn PDF document text
    • https://if.itk.ac.id/asset/backend/upload/ckeditor/files/cheat-codes-for-coin-master_GM406889139.pdfIn PDF document text
    • https://if.itk.ac.id/asset/backend/upload/ckeditor/files/how-to-get-free-robux-as-a-kid_GM431946152.pdfIn PDF document text
    • https://if.itk.ac.id/asset/backend/upload/ckeditor/files/play-roblox-free-online_GM431946152.pdfIn PDF document text
    • https://if.itk.ac.id/asset/backend/upload/ckeditor/files/robux-hack-for-real_GM431946152.pdfIn PDF document text
    • https://if.itk.ac.id/asset/backend/upload/ckeditor/files/free-tedashii-roblox-id_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_002_off000032bc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32BC 22624 bytes
SHA-256: a22f486ed2ee92b46924464c9c397140aefa2a6fa3fc48b459cc7cf10ef30e23
font_01_sfnt_off00006545.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6545 18772 bytes
SHA-256: f359ff9f6a9d1716da13bac1dc9a7b9971cbd47e1612a9a6c5c4b6bbdfa7d697

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