Malicious PDF — malware analysis report

Static analysis result for SHA-256 5037871b3e61d237…

MALICIOUS

PDF

32.4 KB Created: 2021-07-19 11:00:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 072ec8158378dbb97da22971298f3d7f SHA-1: ae4d9dca0b738842bf2d73bd617ed3fc5f300071 SHA-256: 5037871b3e61d237e49b52b1b227fb2685086b2d4009d1645b4d95b15ad60f17
90 Risk Score

Malware Insights

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

The PDF contains embedded JavaScript and links to external websites that are disguised as game hacks or generators. The document body explicitly mentions 'Minecraft Windows 10 Hacks' and includes a 'CLICK HERE TO ACCESS MINECRAFT GENERATOR' call to action, indicating a lure for potentially malicious downloads. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9582

Heuristics 5

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://cheryco.ir/assets/public/js/uploading/files/free-robux-easy_GM431946152.pdfIn PDF document text
    • https://cheryco.ir/assets/public/js/uploading/files/coin-master-free-stuff_GM406889139.pdfIn PDF document text
    • https://cheryco.ir/assets/public/js/uploading/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://cheryco.ir/assets/public/js/uploading/files/minecraft-education-edition-free_GM479516143.pdfIn PDF document text
    • https://cheryco.ir/assets/public/js/uploading/files/real-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://cheryco.ir/assets/public/js/uploading/files/free-robux-no-download_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
font_00_sfnt_off00002a8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A8A 22132 bytes
SHA-256: ed03a372eaa4bc984469035df33b1c48949a6debb9ad28889db66dfdb404c83e
font_01_sfnt_off00005b6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B6F 18696 bytes
SHA-256: 14f86b407040f424958936cb2b2b49b26067a8980bd50a77917f0563cc1bff87

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