Malicious PDF — malware analysis report

Static analysis result for SHA-256 d03927842437e4a5…

MALICIOUS

PDF

43.5 KB Created: 2021-06-03 21:59:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 9c5afc5438d02cad25f386bba72f51f7 SHA-1: 1380aac7c8a01ba0c0a6d3fb1b12d1eecda70aa7 SHA-256: d03927842437e4a599a5e6156d8b5142c9be676a2484610e36a48a6f1535125f
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document employs a lure of free game currency and hacks to trick users into clicking a malicious URL. The primary URL, https://netcdn.online/app/406889139/free-spins-coin-master-no-human-verification-game-hack, is designed to lead users to a potentially harmful site. While no scripts were directly extracted, the PDF structure and embedded URLs strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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 https://netcdn.online/app/406889139/free-spins-coin-master-no-human-verification-game-hack PDF link annotation
    • http://www.js100.com/uploads/ckeditor/files/cute-free-stuff-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/coin-master-new-cards-hack_GM406889139.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/mistplay-robux_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/coin-master-free-spin-27_GM406889139.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/free-roblox-accounts-with-robux-that-work-not-banned-2021_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/roblox-free-online-game_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/free-robux-rewards_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/how-to-download-minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/inappropriate-roblox-games-2021_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/coin-master-twitter_GM406889139.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/claim-free-robux_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/free-roblox-toys_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/how-to-get-free-clothing-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/free-robux-websites-that-actually-work_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/free-robux-redeem-codes_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/roblox-studio-free-download_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/robux-free-com_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/free-robux-com_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/show-me-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/free-roblox-cards-pin-number_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_off00004f65.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F65 24388 bytes
SHA-256: 83fa893ddc1a0b064d2e5b481c2a0696673b98ddbf1eb03fc9ddbf9376477798
font_01_sfnt_off0000873f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x873F 18420 bytes
SHA-256: 17135a8ac8f0ddf9b092d45ccb6416efee18f7ec3206ddf644b79c382a5218c8

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