Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5239f63ac7fd210…

MALICIOUS

PDF

44.3 KB Created: 2021-06-03 06:38:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 8187da861399c6ee98e0ae926800b86b SHA-1: 505f17e649b420a8734bf23debe5b8d36a94b747 SHA-256: e5239f63ac7fd2102f0839ecbbd79647af60f557561920fb16a370c2233d08dc
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 0.9865

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/431946152/kuso-icu-roblox-hack-game-hack PDF link annotation
    • http://perpus.unik-kediri.ac.id/repository/free-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.unik-kediri.ac.id/repository/robux-boost_GM431946152.pdfIn PDF document text
    • http://perpus.unik-kediri.ac.id/repository/coin-master-hacks_GM406889139.pdfIn PDF document text
    • http://perpus.unik-kediri.ac.id/repository/oprewards-login_GM431946152.pdfIn PDF document text
    • http://perpus.unik-kediri.ac.id/repository/latest-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://perpus.unik-kediri.ac.id/repository/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • http://perpus.unik-kediri.ac.id/repository/coin-master-free-spins-hack-2021_GM406889139.pdfIn PDF document text
    • http://perpus.unik-kediri.ac.id/repository/roblox-hack-download-pc_GM431946152.pdfIn PDF document text
    • http://perpus.unik-kediri.ac.id/repository/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://perpus.unik-kediri.ac.id/repository/free-robux-generator_GM431946152.pdfIn PDF document text
    • http://perpus.unik-kediri.ac.id/repository/coin-master-hack-without-downloading-apps_GM406889139.pdfIn PDF document text
    • http://perpus.unik-kediri.ac.id/repository/coin-master-fan-page-giveaway_GM406889139.pdfIn PDF document text
    • http://perpus.unik-kediri.ac.id/repository/coin-master-70-spin-link-today_GM406889139.pdfIn PDF document text
    • http://perpus.unik-kediri.ac.id/repository/free-spins-coin-master-app-iphone_GM406889139.pdfIn PDF document text
    • http://perpus.unik-kediri.ac.id/repository/gold-card-coin-master-free_GM406889139.pdfIn PDF document text
    • http://perpus.unik-kediri.ac.id/repository/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • http://perpus.unik-kediri.ac.id/repository/how-to-get-free-robux-for-real_GM431946152.pdfIn PDF document text
    • http://perpus.unik-kediri.ac.id/repository/free-minecraft-alt-accounts_GM479516143.pdfIn PDF document text
    • http://perpus.unik-kediri.ac.id/repository/free-minecraft-coloring-pages_GM479516143.pdfIn PDF document text
    • http://perpus.unik-kediri.ac.id/repository/free-robux-hacker-us_GM431946152.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
font_00_sfnt_off00005074.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5074 24944 bytes
SHA-256: 14338bde094e54a2fe4a9da2ad9161cb521997405098260f43efdfa1490ee7b3
font_01_sfnt_off00008a1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A1D 18320 bytes
SHA-256: 67b96beca271d5ff8db6d4205f4bcb305d403275eb03eb731bd8bb208d3be0d2

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