Malicious PDF — malware analysis report

Static analysis result for SHA-256 594862995f439627…

MALICIOUS

PDF

44.5 KB Created: 2021-06-04 00:13:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 809a5829e8051a7c1586f5a2179e66bb SHA-1: 3c7eee0445a2bfcbf9d47ec37dae3fa822ed1f2a SHA-256: 594862995f439627e7180a448b77db62de90327d4b9b18b962f15bee44b8657e
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a high-severity heuristic indicating it links to a game hack redirector, specifically targeting users interested in 'Coin Master' game cheats. The embedded URL, https://netcdn.online/app/406889139/how-to-get-free-spins-on-coin-master-game-game-hack, is the primary indicator of this malicious lure. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect users to a potentially malicious site, likely for further exploitation or credential harvesting.

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/how-to-get-free-spins-on-coin-master-game-game-hack PDF link annotation
    • http://www.library.umbjm.ac.id/repository/roblox-girl-avatar_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/minecraft-free-trial_GM479516143.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/coin-master-hack-tool-v1-9-download-free_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/coin-master-70-spin-link-2021_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/fbchampion-com_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/coin-master-free-spins-link-2021-march_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/how-to-hack-people-in-roblox_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/free-robux-generator-2021-no-survey_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/robux-com-roblox_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/coin-master-hack-spin-ios_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/free-robux-discord_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/get-free-spins-coin-master-october-2021_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/get-free-robux-now_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/roblox-studio-free-robux_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/hacks-for-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/easy-robux-hack_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/coin-master_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/free-robux-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/coin-master-hack-generator-tool_GM406889139.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
stream_004_off00004f9a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F9A 26188 bytes
SHA-256: 81b2f3cb6f57f15bae0246414190ef44b6217975fa702ca39b2c5e65252c5837
font_01_sfnt_off00008b7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B7A 18308 bytes
SHA-256: 10163bb99b7c52850725d3517fa904ee973029f2387d51d5c8df1a27f3218e6c

Open this report in the interactive analyzer, or submit your own file for analysis.