Malicious PDF — malware analysis report

Static analysis result for SHA-256 382fa47d87a7e466…

MALICIOUS

PDF

46.6 KB Created: 2021-06-09 07:19:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 8b498f54ce998d7e69bad82751616966 SHA-1: a989f4e504e38b54ad3b6272d15b7adf23304142 SHA-256: 382fa47d87a7e466b6982f941ca4606cd51cdea85197c413d9817c9e62458c27
160 Risk Score

Malware Insights

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

The PDF contains multiple links to known malicious redirectors, specifically targeting users interested in game hacks and generators. The document body, though partially corrupted, contains references to 'game hack' and a URL that aligns with the heuristic findings. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9748

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-tell-if-your-account-is-hacked-on-roblox-game-hack In PDF document text
    • http://slim.sisminkada.net/repository/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-robux-picture_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/mobihack-roblox-hack_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/minecraft-pc-download-free-full-version_GM479516143.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-tiktok-fans-and-likes_GM835599320.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/how-to-get-free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/get-free-robux_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/coin-master-free-spinv1-0apkpure-com-apk_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/optifine-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/how-to-get-hacks-on-minecraft_GM479516143.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/coin-master-free-spin-now_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/coin-master-game-hack-kaise-kare_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/totally-free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-coins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/how-to-get-free-spins-for-coin-master_GM406889139.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_off00004db1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4DB1 24956 bytes
SHA-256: 8ceb146ca06de54d8a649d9a64f1495812db1157eb58ab89c4b190730b26fa6e
font_01_sfnt_off0000870e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x870E 2956 bytes
SHA-256: bab8933fc39dc331bc4c1c904a82b1432ab2e02478fa0a59453c98c5c231da8d
font_02_sfnt_off0000912e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x912E 18924 bytes
SHA-256: 4c92d45797c626678d187b55c07ea074c05b5289ab8daae3fb89fc389070e4a4

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