Malicious PDF — malware analysis report

Static analysis result for SHA-256 9643969e10bc97be…

MALICIOUS

PDF

44.8 KB Created: 2021-06-07 12:03:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 59a5b8b7f87d0e12e831f139ae72a2d4 SHA-1: 4318c9635cff5e72f9ca17cc6ded16f1b77d82c9 SHA-256: 9643969e10bc97be1e555b3989a3564d3983945b880f1ac72ac17b1bebff62fb
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a game hack redirector lure, pointing to malicious infrastructure. The document body, though partially garbled, contains text related to game hacks and a URL that is also listed as a known malicious redirector. The presence of embedded URLs and the nature of the lure suggest an attempt to trick users into visiting malicious sites, likely as part of a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.tw/app/431946152/what-is-the-best-free-game-script-executor-roblox-game-hack In PDF document text
    • http://schottlandfieber.de/images/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
    • http://schottlandfieber.de/images/coin-master-free-spin-today-2021_GM406889139.pdfIn PDF document text
    • http://schottlandfieber.de/images/minecraft-windows-10-free-code_GM479516143.pdfIn PDF document text
    • http://schottlandfieber.de/images/free-roblox-clothes_GM431946152.pdfIn PDF document text
    • http://schottlandfieber.de/images/can-you-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://schottlandfieber.de/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://schottlandfieber.de/images/free-minecraft-account-generator_GM479516143.pdfIn PDF document text
    • http://schottlandfieber.de/images/how-to-get-free-roebucks-on-roblox_GM431946152.pdfIn PDF document text
    • http://schottlandfieber.de/images/wurst-18_GM479516143.pdfIn PDF document text
    • http://schottlandfieber.de/images/free-spins-coin-master-cheats_GM406889139.pdfIn PDF document text
    • http://schottlandfieber.de/images/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://schottlandfieber.de/images/minecraft-bedrock-edition-download-pc-free_GM479516143.pdfIn PDF document text
    • http://schottlandfieber.de/images/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
    • http://schottlandfieber.de/images/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://schottlandfieber.de/images/minecraft-free-download-unblocked_GM479516143.pdfIn PDF document text
    • http://schottlandfieber.de/images/mcpe_GM479516143.pdfIn PDF document text
    • http://schottlandfieber.de/images/you-promised-my-son-free-robux_GM431946152.pdfIn PDF document text
    • http://schottlandfieber.de/images/earn-free-robux-for-roblox_GM431946152.pdfIn PDF document text
    • http://schottlandfieber.de/images/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://schottlandfieber.de/images/oprewards-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004fed.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FED 25864 bytes
SHA-256: 3d18bbdf16defc230a97d473317503e7eaa008f52255eea88ce38252ce9d6898
font_01_sfnt_off0000899e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x899E 19340 bytes
SHA-256: 6d89df68f6820394408a1a54c8cacd4077f6fa299928d1754ee169f71b8cc17c

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