Malicious PDF — malware analysis report

Static analysis result for SHA-256 67b634e56f82ee66…

MALICIOUS

PDF

42.0 KB Created: 2021-05-15 23:42:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 27429290a05a131dd7983fcda9eefd18 SHA-1: bd38b90824446b4b12a6dffb6a7c66e9e4974509 SHA-256: 67b634e56f82ee662f6f7bee965d8e607cb022fe432918521ea788a2824721c7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links designed to lure users to potentially malicious websites, masquerading as game hacks or generators. The primary malicious link identified is https://netcdn.xyz/app/406889139/coin-master-400-spin-link-today-game-hack, which is flagged as a known malicious redirector. The document body and embedded URLs suggest a scam related to in-game currency or hacks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/406889139/coin-master-400-spin-link-today-game-hack In PDF document text
    • http://opac.kolejkrim.edu.my/repository/coin-master-free-link-spin_GM406889139.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/how-to-get-free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/coin-master-ad_GM406889139.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/hacking-apps-for-roblox_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/free-robux-no-apps_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/como-hackear-coin-master-2021-espaol_GM406889139.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/free-robux-kid-friendly-no-human-verification_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/free-games-like-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/easy-roblox-today_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/apps-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/how-do-you-get-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/how-to-get-free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/free-spins-on-coin-master-link_GM406889139.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_003_off00004af6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AF6 23816 bytes
SHA-256: d4ecce1d9618125907ba08d240171727280688a5914d7914b7a4b8db504f3c5e
font_01_sfnt_off000080ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80ED 18480 bytes
SHA-256: dad02a5aef0ea5dcf7b1fe658ab5d5874ad8a27366cac98dbe4b862ee070bc87