Malicious PDF — malware analysis report

Static analysis result for SHA-256 888f6ce6dbd22b0e…

MALICIOUS

PDF

42.3 KB Created: 2021-05-17 17:40:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 3899ce7e0111c405f7f2e6dde286e8c6 SHA-1: d7e421460a28fee45ed001569e3c8fd4ef98cd12 SHA-256: 888f6ce6dbd22b0e66a46ab2a42479a671d51f944e6eed31fe31855695e98e6f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites, including a known malicious redirector, disguised as 'game hacks' and 'free generators'. These links are designed to lure users into clicking them, likely leading to further malicious content or downloads. The presence of these deceptive links and the ML classifier's high confidence score indicate a malicious intent to exploit user interest in freebies.

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/coin-master-hack-2021-free-game-hack In PDF document text
    • http://kulturlandschaften.eu/images/how-to-hack-someones-account-on-roblox_GM431946152.pdfIn PDF document text
    • http://kulturlandschaften.eu/images/coin-master-hacks-for-free-spins_GM406889139.pdfIn PDF document text
    • http://kulturlandschaften.eu/images/free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://kulturlandschaften.eu/images/how-to-get-free-robux-as-a-kid_GM431946152.pdfIn PDF document text
    • http://kulturlandschaften.eu/images/how-to-hack-roblox-on-mobile_GM431946152.pdfIn PDF document text
    • http://kulturlandschaften.eu/images/play-games-for-robux_GM431946152.pdfIn PDF document text
    • http://kulturlandschaften.eu/images/can-i-have-robux_GM431946152.pdfIn PDF document text
    • http://kulturlandschaften.eu/images/hack-coin-master-using-cheat-engine_GM406889139.pdfIn PDF document text
    • http://kulturlandschaften.eu/images/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://kulturlandschaften.eu/images/coin-master-how-to-get-japan-sushi-card-free_GM406889139.pdfIn PDF document text
    • http://kulturlandschaften.eu/images/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://kulturlandschaften.eu/images/coin-master-free-coins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://kulturlandschaften.eu/images/minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://kulturlandschaften.eu/images/is-minecraft-java-free_GM479516143.pdfIn PDF document text
    • http://kulturlandschaften.eu/images/how-to-get-minecraft-coins-for-free_GM479516143.pdfIn PDF document text
    • http://kulturlandschaften.eu/images/hack-minecraft_GM479516143.pdfIn PDF document text
    • http://kulturlandschaften.eu/images/free-robux-websites-that-actually-work_GM431946152.pdfIn PDF document text
    • http://kulturlandschaften.eu/images/free-robux-cards_GM431946152.pdfIn PDF document text
    • http://kulturlandschaften.eu/images/free-robux-no-email_GM431946152.pdfIn PDF document text
    • http://kulturlandschaften.eu/images/free-roblox-dominus_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_off00004b61.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B61 25136 bytes
SHA-256: 4430541899f340c06ed2cbf2e91ec6324b168bc75376d1b8d8b5b218b2ecca5b
font_01_sfnt_off00008311.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8311 18284 bytes
SHA-256: 24548c4fb8e2ba96ea34c2ab549c5298a51cd3d4936d0c2ae8965e87a81b14d2

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