Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc1b2a83314666fc…

MALICIOUS

PDF

33.8 KB Created: 2021-07-04 08:04:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 8d5ce0340034ecb4ca36b15dbd51fc09 SHA-1: 1aa93e0a152bae6894952a2e7809d5437fa67e41 SHA-256: fc1b2a83314666fc1b6a0c630f0a837dc18323991ef3ac97f7bbece7a169df53
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links and embedded text related to game hacks and free currency for popular games like Minecraft and Roblox. The primary lure appears to be directing users to external URLs, such as http://netcdn.tw/app/479516143/how-to-hack-minecraft-game-hack, which is flagged as a high-risk redirector. While no scripts were explicitly extracted, the nature of the content and the ML classifier's high confidence suggest the PDF is designed to lead users to malicious sites, likely for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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/how-to-hack-minecraft-game-hack PDF link annotation
    • http://uilis.unsyiah.ac.id/ebook/repository/minecraft-pocket-edition-free_GM479516143.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/comment-avoir-la-free-verification-pour-robux_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/free-robux-codes-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/how-to-earn-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/get-me-free-robux_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/free-shirt-templates-on-roblox_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/how-to-use-hashes-to-hack-someone-in-roblox_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/coin-master-daily-free-spins-link-today-blog_GM406889139.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/free-robux-with-out-rewards_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/how-to-get-free-robux-youtube_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/coinmaster-spin-ml-free_GM406889139.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/cheat-engine-tricks-for-roblox_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/roblox-free-clothes-generator_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/best-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/bc-free-roblox_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/coin-master-hack-game_GM406889139.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/roblox-cheat-speed-run-4_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/coin-master-free-spins-link-2021-no-verification_GM406889139.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/free-roblox-toy-codes-free_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_off00002f74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F74 22396 bytes
SHA-256: 1e89ef8a7809fc8c030c7563317328dcce9784e1ed00e5620f1f0404f25737db
font_01_sfnt_off0000612d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x612D 18332 bytes
SHA-256: 532c884a4d8ab194113d3323d4275cc83154e954f62235f4e0d0243afa765cb8

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