Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5df9fdb17537fac…

MALICIOUS

PDF

42.0 KB Created: 2021-05-13 02:14:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-27
MD5: a7e05e9cf0c84f467f3f796920df6625 SHA-1: 9098c6b2a925404e4ea21ede2a49d4ca17be20e3 SHA-256: c5df9fdb17537fac2b2fecb2fa58280a336fdceaef8b617eb6c3a2f32648fc05
160 Risk Score

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/free-spins-for-coin-masters-game-hack In PDF document text
    • http://www.compusiteinc.com/images/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/minecraft-life-hacks_GM479516143.pdfIn PDF document text
    • http://www.compusiteinc.com/images/rbxfree-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/roblox-free-accessories_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/coin-master-cheat-to-get-free-spins_GM406889139.pdfIn PDF document text
    • http://www.compusiteinc.com/images/how-to-hack-coin-master-android_GM406889139.pdfIn PDF document text
    • http://www.compusiteinc.com/images/free-roblox-hair-boy_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/how-to-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.compusiteinc.com/images/mcpe-master-unlimited-coins-free-download_GM406889139.pdfIn PDF document text
    • http://www.compusiteinc.com/images/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/ways-to-get-robux_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/roblox-hackers-list_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/apps-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://www.compusiteinc.com/images/free-robux-kid-friendly-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.compusiteinc.com/images/minecraft-free-trial_GM479516143.pdfIn PDF document text
    • http://www.compusiteinc.com/images/robux-website_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/coin-free-spin_GM406889139.pdfIn PDF document text
    • http://www.compusiteinc.com/images/rbx-free-robux_GM431946152.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_off00004aa1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AA1 24344 bytes
SHA-256: 1922e6eef97dff968ee8df30d994cbb48f1560d71767b21d1259c3df56088d9b
font_01_sfnt_off000082e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82E1 17884 bytes
SHA-256: 7a686c540965cac69e1923dfbb6a78ce3f92ec60dbbf6836da21cbb58cd4d6cc