Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd7aaac6edf71e89…

MALICIOUS

PDF

33.9 KB Created: 2021-07-06 21:49:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-18
MD5: b18d0923269e8c38e25734e27938f8af SHA-1: 715022046c582ce9167b7fff47d95f7e773c1dce SHA-256: cd7aaac6edf71e89851b3a2969bb3b3575cf3effe2fda3099ecd0adc19ff7a13
160 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/479516143/wurst-hacked-client-game-hack In PDF document text
    • https://www.e-starmagazine.com/uploads/files/bad-minecraft-free_GM479516143.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/how-to-coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/rbxoffers-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/daily-free-spins-and-coins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/blogger-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/hack-infinitos-robux-pastebin_GM431946152.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/freespinandcoin_GM406889139.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/send-me-500-2021-spins_GM406889139.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/how-to-get-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/gain-robux_GM431946152.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/how-long-is-the-minecraft-free-trial_GM479516143.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/free-robux-with-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/server-destroy-exploit-roblox-cheat-engine_GM431946152.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/free-minecraft-svg-cutting-files_GM479516143.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/coin-master-spin-free_GM406889139.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/tryrbx-site-free-robux_GM431946152.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/how-to-get-a-free-dominus-in-roblox_GM431946152.pdfIn PDF document text
    • https://www.e-starmagazine.com/uploads/files/coin-master-free-spins-facebook_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
font_00_sfnt_off00003092.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3092 21928 bytes
SHA-256: e67b1c2ea1ac070a1122317fca0c9ca2ac18443de7039cf3fda322df0f986488
font_01_sfnt_off0000610b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x610B 18612 bytes
SHA-256: 6c127c2f1f05179c0e755be5d0143975e5cbd189ac084fc1c127f9f263ebd289

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