Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ec19803d659cb54…

MALICIOUS

PDF

44.8 KB Created: 2021-06-11 12:59:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d67056aff3e819aaae016cc920eef91a SHA-1: a98fc4a24b4bf94c8b7ded49ca1427aedb148c24 SHA-256: 8ec19803d659cb54387817a97ad1f64cc606efde02e5ca1f7c471c008a65ea9c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, disguised as "free generators" or "game hacks" for popular games. The document body, though partially corrupted, contains references to these lures and embedded URLs. The primary function appears to be redirecting users to potentially harmful content or further malicious downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.tw/app/431946152/how-to-make-a-free-robux-game-game-hack In PDF document text
    • http://slim.sisminkada.net/repository/minecraft-free-apk-download-016-0_GM479516143.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/coinmasterfreespinlink_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/coin-master-free-daily-spins-2021_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/how-to-get-free-unlimited-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/roblox-2021-hack_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/coin-master-daily-free-spins-link-today-blog_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/minecraft-free-download-linux_GM479516143.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/if-you-delete-minecraft-can-you-redownload-it-for-free_GM479516143.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-robux-gift-card-code-database_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/earn-free-robux-today_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/daily-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-roblox-boy-hair_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/what-is-roblox-hack_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/can-i-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/coin-master-card-link-free_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-gamepass-script-roblox-2021_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/coin-master-mod-apk-2021_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/can-you-hack-coin-master_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_004_off00005379.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5379 24052 bytes
SHA-256: c962875e7752c08222826c82a378659c0afdd003fa84a7c41fb0f167717bf92b
font_01_sfnt_off00008aa1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AA1 19032 bytes
SHA-256: bf8dfc04ea5669ec73f9084608c632adb457c5fc83d719ba84e8d4bdee6c3913

Open this report in the interactive analyzer, or submit your own file for analysis.