Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed28834789fbfe92…

MALICIOUS

PDF

45.7 KB Created: 2021-05-13 22:31:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 667d750def8b6678b1827b8c13d351ef SHA-1: bc49b347591c21c5a40301691d584a2754dcb215 SHA-256: ed28834789fbfe92ce1dd109ace5178e262d3e813440fe7a04c8e120ddb4927a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains lures for free game items and redirects users to malicious infrastructure, specifically the URL https://netcdn.xyz/app/431946152/how-to-get-free-items-on-roblox-game-hack. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to lead users to potentially harmful content or further exploits. No scripts were extracted, but the document structure and embedded links strongly suggest a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

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/431946152/how-to-get-free-items-on-roblox-game-hack In PDF document text
    • http://alpen-seeblick.at/images/how-to-get-minecraft-for-free-on-mac_GM479516143.pdfIn PDF document text
    • http://alpen-seeblick.at/images/hack-coin-master-343-apk_GM406889139.pdfIn PDF document text
    • http://alpen-seeblick.at/images/how-to-get-free-robux-without-verifying_GM431946152.pdfIn PDF document text
    • http://alpen-seeblick.at/images/coin-master-key-free-spin_GM406889139.pdfIn PDF document text
    • http://alpen-seeblick.at/images/roblox-army-free-robux_GM431946152.pdfIn PDF document text
    • http://alpen-seeblick.at/images/free-links-to-coin-master_GM406889139.pdfIn PDF document text
    • http://alpen-seeblick.at/images/roblox-hack-me_GM431946152.pdfIn PDF document text
    • http://alpen-seeblick.at/images/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://alpen-seeblick.at/images/free-robux-real_GM431946152.pdfIn PDF document text
    • http://alpen-seeblick.at/images/free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • http://alpen-seeblick.at/images/roblox-free-hats_GM431946152.pdfIn PDF document text
    • http://alpen-seeblick.at/images/can-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://alpen-seeblick.at/images/coin-master-mod-apk_GM406889139.pdfIn PDF document text
    • http://alpen-seeblick.at/images/how-to-earn-robux-fast_GM431946152.pdfIn PDF document text
    • http://alpen-seeblick.at/images/roblox-free-models_GM431946152.pdfIn PDF document text
    • http://alpen-seeblick.at/images/coin-master-hacker-club_GM406889139.pdfIn PDF document text
    • http://alpen-seeblick.at/images/coin-master-levels_GM406889139.pdfIn PDF document text
    • http://alpen-seeblick.at/images/coin-master-free-spin-daily-bonus_GM406889139.pdfIn PDF document text
    • http://alpen-seeblick.at/images/coin-master-hack-apk-with-fb-login-2021_GM406889139.pdfIn PDF document text
    • http://alpen-seeblick.at/images/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004ad1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AD1 25748 bytes
SHA-256: be3d60882829b52d48d72dad6f721eabb538d44776fcb363308f1bada139e766
font_01_sfnt_off0000859d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x859D 2872 bytes
SHA-256: 5a38050e56bfed6ba013c4835499ae05f4b57b22e606c9172dd4bc2ae7fd1207
font_02_sfnt_off00008f58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F58 18476 bytes
SHA-256: bcf5e908c2747fcd05be89c2efaf93907a574c840def241376182163d884a009

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