Malicious PDF — malware analysis report

Static analysis result for SHA-256 215b6cc9bec8bb73…

MALICIOUS

PDF

41.5 KB Created: 2021-05-14 05:22:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d226ffbf2898a5e4a6e7d4c70ebe2b99 SHA-1: 7261c195029e016e9265d86cd81b774cc8fa67e6 SHA-256: 215b6cc9bec8bb739b4b2bebc80aaa8e4cfb6a24c708cecde38c033cec7456b3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to known malicious infrastructure, specifically promoting game hacks and generators. The primary lure is for 'Coin Master' game cheats, directing users to a URL that is flagged as malicious. While no scripts were explicitly extracted, the PDF structure itself contains embedded links that are designed to trick users into visiting potentially harmful websites.

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-how-to-get-japan-sushi-card-free-game-hack In PDF document text
    • http://per-bittner.de/images/coin-master-free-in-app-purchases-jailbreak_GM406889139.pdfIn PDF document text
    • http://per-bittner.de/images/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://per-bittner.de/images/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://per-bittner.de/images/free-robux-hack_GM431946152.pdfIn PDF document text
    • http://per-bittner.de/images/get-more-robux_GM431946152.pdfIn PDF document text
    • http://per-bittner.de/images/client-minecraft_GM479516143.pdfIn PDF document text
    • http://per-bittner.de/images/coin-master-hack-program_GM406889139.pdfIn PDF document text
    • http://per-bittner.de/images/how-to-hack-coin-master-using-es-file_GM406889139.pdfIn PDF document text
    • http://per-bittner.de/images/coin-master-free-spins-link-iphone_GM406889139.pdfIn PDF document text
    • http://per-bittner.de/images/roblox-gift-card-online-free_GM431946152.pdfIn PDF document text
    • http://per-bittner.de/images/how-do-u-hack-roblox_GM431946152.pdfIn PDF document text
    • http://per-bittner.de/images/minecraft-pe-free-ios_GM479516143.pdfIn PDF document text
    • http://per-bittner.de/images/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://per-bittner.de/images/100-robux_GM431946152.pdfIn PDF document text
    • http://per-bittner.de/images/free-robux-come_GM431946152.pdfIn PDF document text
    • http://per-bittner.de/images/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://per-bittner.de/images/roblox-2021_GM431946152.pdfIn PDF document text
    • http://per-bittner.de/images/coin-master-free-spins-promo-code_GM406889139.pdfIn PDF document text
    • http://per-bittner.de/images/roblox-free-download_GM431946152.pdfIn PDF document text
    • http://per-bittner.de/images/minecraft-creative-mode-free_GM479516143.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_off00004890.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4890 23892 bytes
SHA-256: c7c04f65b9a7fdedae551d39b908b3d54d8b3f5495b88eece0ba3ff2377bf3f4
font_01_sfnt_off00007e70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E70 18696 bytes
SHA-256: b658d8f1c141fc8c479f08926c8ce77f4430151ae81ac58e32bab20f08e84866

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