Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5097e6d8148252f…

MALICIOUS

PDF

48.0 KB Created: 2021-06-08 22:21:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ebeff49ce9cdb77e1358ee5b46ba5f5c SHA-1: aa7af30d4b8325565b787403389f463f1695aee5 SHA-256: e5097e6d8148252f34143871dc14df776c2d964a42dd07b513f8355337ab8718
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a lure for free game items and links to a known malicious redirector. The document body, though partially corrupted, contains text related to 'Free Roblox Csgo Codes' and the malicious URL. The presence of a malicious redirector indicates an attempt to deliver a secondary payload or lead the user to a phishing site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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/free-roblox-csgo-codes-game-hack In PDF document text
    • https://perpustakaan.stifar.ac.id/repository/minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/free-coin-spin_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/coin-master-hack-tool_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/how-do-i-get-free-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/free-spins-coins-coin-master_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/coin-master-hack-download_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/freespinandcoinblogspot-com-2021-11-coinmasterfreespins_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/admin-commands-roblox-hack-download_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/how-to-get-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/coin-master-unlimited-coins-hack-apk-download_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/free-robux-generator-for-roblox-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/minecraft-bedrock-edition-free-with-java_GM479516143.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/minecraft-pe-server-hosting-free_GM479516143.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/roblox-hack-com_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/coin-master-free-fire_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005496.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5496 25052 bytes
SHA-256: acc5aa6650825532e84f8e4d66aa8192da9d362fbf4592a263e11a23c6b9ae52
font_01_sfnt_off00008e3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E3D 2940 bytes
SHA-256: eb230542719c96b42e3fd8bb01e35f13ebd5f02629049da3a58e7fd7607bf48a
font_02_sfnt_off0000984c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x984C 18408 bytes
SHA-256: 4a5499031eaa7731262cdd68ef39e4bea3c831e44397a05ffe47c660c3dd71e3

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