Malicious PDF — malware analysis report

Static analysis result for SHA-256 25ef771513bd6db6…

MALICIOUS

PDF

31.5 KB Created: 2021-05-16 08:06:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: fb1c3bfbf134f921b91aff20df93b7d6 SHA-1: aa2c36a6882681e2d8f00705ce569e0485af753c SHA-256: 25ef771513bd6db6abcff19f3047220a43cbfe4ce7b4148a9337750c959d09cf
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links disguised as game hacks and generators, which are flagged as malicious redirectors. The primary lure URL is https://netcdn.xyz/app/479516143/minecraft-java-free-download-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a social engineering tactic to redirect users to potentially harmful content, likely for further exploitation or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 3

  • 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.
  • 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/479516143/minecraft-java-free-download-game-hack In PDF document text
    • https://kunstmalen.ch/images/coin-master-hack-online_GM406889139.pdfIn PDF document text
    • https://kunstmalen.ch/images/daily-spin_GM406889139.pdfIn PDF document text
    • https://kunstmalen.ch/images/free-robux-app_GM431946152.pdfIn PDF document text
    • https://kunstmalen.ch/images/how-to-get-minecraft-for-free-on-xbox-360_GM479516143.pdfIn PDF document text
    • https://kunstmalen.ch/images/how-to-get-free-mods-in-minecraft_GM479516143.pdfIn PDF document text
    • https://kunstmalen.ch/images/robux-hack-me_GM431946152.pdfIn PDF document text
    • https://kunstmalen.ch/images/roblox-free-login_GM431946152.pdfIn PDF document text
    • https://kunstmalen.ch/images/robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • https://kunstmalen.ch/images/coin-master-claim-spins_GM406889139.pdfIn PDF document text
    • https://kunstmalen.ch/images/mcpe-master-hack-coins_GM406889139.pdfIn PDF document text
    • https://kunstmalen.ch/images/hack-coin-master-apk-32_GM406889139.pdfIn PDF document text
    • https://kunstmalen.ch/images/roblox-script-executor-free_GM431946152.pdfIn PDF document text
    • https://kunstmalen.ch/images/minecraft-that-you-can-play-for-free_GM479516143.pdfIn PDF document text
    • https://kunstmalen.ch/images/free-spins-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://kunstmalen.ch/images/free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://kunstmalen.ch/images/roblox-avatar-editor-free_GM431946152.pdfIn PDF document text
    • https://kunstmalen.ch/images/op-rewards-robux_GM431946152.pdfIn PDF document text
    • https://kunstmalen.ch/images/coin-master-link-for-spins_GM406889139.pdfIn PDF document text
    • https://kunstmalen.ch/images/coin-master-free-spins-daily_GM406889139.pdfIn PDF document text
    • https://kunstmalen.ch/images/coin-master-hack-to-get-free-spins_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004cbd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4CBD 24916 bytes
SHA-256: 31bd7b45b99d92adb1ff4c51b88737232b59262099e70e597a704b09f0236b0d

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