Malicious PDF — malware analysis report

Static analysis result for SHA-256 87eb4606ce063283…

MALICIOUS

PDF

45.2 KB Created: 2021-05-11 03:39:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: c720f2fd29c2e2039762af757ef92a6e SHA-1: 53f637e38c667c63798c19cf6693094bf5c2d3d5 SHA-256: 87eb4606ce063283aab0de841c639e7bb89f0dd1d08f5bf8e0280dfa849faecc
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9551

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.xyz/app/479516143/how-do-you-hack-minecraft-game-hack PDF link annotation
    • http://opac.kolejkrim.edu.my/repository/minecraft-windows-10-edition-hacked-client_GM479516143.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/free-spin-generator-for-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/coin-master-free-spins--coins-2021_GM406889139.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/coin-master-spins-for-free_GM406889139.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/android-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/coin-master-official-website_GM406889139.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/free-robux-pin-codes_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/bloxland-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/win-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/how-to-get-free-robux-gift-cards_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/free-spins-coin-master-cheat_GM406889139.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/how-to-hack-coin-master-apkmody_GM406889139.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/need-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/daily-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/best-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/minecraft-pocket-edition-hack_GM479516143.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/how-to-get-free-chest-in-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/how-to-get-free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a9a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A9A 24984 bytes
SHA-256: e3f5720d68e46bb38fa8539944c29d4e21bf6da71e995cc3f8c4c69e007366ac
font_01_sfnt_off000083fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83FE 2824 bytes
SHA-256: 61b3a573627d4f03d30684157e1627da3b4499cefab0fdf17b45999135b0250b
font_02_sfnt_off00008da4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DA4 18512 bytes
SHA-256: 3291eec6b86d740bab8ba76643ef34913a0c4ab2a930ce2f65b8b3fd60c7ead6

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