Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ba0cf90a2a4e15d…

MALICIOUS

PDF

43.2 KB Created: 2021-05-13 21:04:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 4011df9a86d3f5e61c21eb3ea78d9355 SHA-1: a6bb04e1696ce8cc8a375c3cc5970cec0530f8c9 SHA-256: 5ba0cf90a2a4e15d6045659a4a1f7c42b8fa22e6afccb00944448fdf6110d69e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains multiple links to external websites, identified as malicious redirectors. These links are presented as 'free generators' or 'game hacks' for popular games, indicating a lure to trick users into visiting potentially harmful sites. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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-free-spons-apk-2021-game-hack In PDF document text
    • http://solidkom.ch/images/toolbox-for-minecraft_GM479516143.pdfIn PDF document text
    • http://solidkom.ch/images/free-roblox-accessories_GM431946152.pdfIn PDF document text
    • http://solidkom.ch/images/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • http://solidkom.ch/images/minecraft-pvp-hacks_GM479516143.pdfIn PDF document text
    • http://solidkom.ch/images/freecoins_GM406889139.pdfIn PDF document text
    • http://solidkom.ch/images/free-robux-codes-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://solidkom.ch/images/minecraft-hack-client-download_GM479516143.pdfIn PDF document text
    • http://solidkom.ch/images/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://solidkom.ch/images/lazy-blocks-com-free-robux_GM431946152.pdfIn PDF document text
    • http://solidkom.ch/images/oprewards-com-login_GM431946152.pdfIn PDF document text
    • http://solidkom.ch/images/google-how-do-you-get-robux_GM431946152.pdfIn PDF document text
    • http://solidkom.ch/images/get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://solidkom.ch/images/mobihack-roblox-hack_GM431946152.pdfIn PDF document text
    • http://solidkom.ch/images/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdfIn PDF document text
    • http://solidkom.ch/images/games-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://solidkom.ch/images/free-robux-earn_GM431946152.pdfIn PDF document text
    • http://solidkom.ch/images/roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://solidkom.ch/images/free-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
    • http://solidkom.ch/images/how-to-get-free-coins-and-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://solidkom.ch/images/free-diamonds-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_003_off00004a17.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A17 25760 bytes
SHA-256: 27e25bae895f7c946312283bf02f21d453748f9f4f1a1b0c529b7319e3d36337
font_01_sfnt_off000085c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85C5 18456 bytes
SHA-256: 29cdb33c079fef0813399b5d3456e0cee6bb382532089b205a8c189028fb290e

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