Malicious PDF — malware analysis report

Static analysis result for SHA-256 0861dea1caf71aee…

MALICIOUS

PDF

32.6 KB Created: 2021-07-19 02:11:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: a98734d925ad667dbfdf9af99f51e0cf SHA-1: bc515c5bdfa4702864fca9f1ac4e0d56f2189566 SHA-256: 0861dea1caf71aeecb6d8812f12a0f4e3c8e1cc689a0bc8192605cb2556319b0
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a high-severity heuristic indicating it links to a game hack lure, specifically directing users to 'http://netcdn.tw/app/479516143/minecraft-windows-10-hacks-game-hack'. The presence of multiple embedded URLs, some of which are also associated with game-related cheats, further supports this. The document's structure and embedded links suggest it is designed to trick users into visiting malicious sites, likely to download further malware or exploit vulnerabilities.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9548

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://netcdn.tw/app/479516143/minecraft-windows-10-hacks-game-hack PDF link annotation
    • https://www.wildpark-johannismuehle.de/images/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.wildpark-johannismuehle.de/images/free-modded-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • https://www.wildpark-johannismuehle.de/images/how-to-get-minecraft-for-free-on-mobile_GM479516143.pdfIn PDF document text
    • https://www.wildpark-johannismuehle.de/images/free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • https://www.wildpark-johannismuehle.de/images/minecraft-pe-hack-client_GM479516143.pdfIn PDF document text
    • https://www.wildpark-johannismuehle.de/images/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.wildpark-johannismuehle.de/images/minecraft-pe-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_off000028ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x28EC 22952 bytes
SHA-256: 597bac28e7db6920a93686171d6e97fed5221eba359b4335d325b75a67c7dabd
font_01_sfnt_off00005c62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C62 18696 bytes
SHA-256: 14f86b407040f424958936cb2b2b49b26067a8980bd50a77917f0563cc1bff87

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