Malicious PDF — malware analysis report

Static analysis result for SHA-256 59e5a1bffd939189…

MALICIOUS

PDF

33.8 KB Created: 2021-06-26 00:07:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: d8aa3a2e8e3b3c5e6d276a03b8765817 SHA-1: 806ffe719f50bbae54d81d0695e60bfd3324ac99 SHA-256: 59e5a1bffd939189f0c15dadac3d75d54747db82267399e1dbca7fda5c2d3e98
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains multiple embedded URLs that advertise game hacks and generators, a common lure for malicious downloads. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' specifically flags this behavior. The ML classifier also strongly indicated maliciousness. The primary IOC is the redirector URL, which likely leads to the download of a second-stage payload.

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.co/app/431946152/hack-forums-roblox-hacks-game-hack PDF link annotation
    • http://library.imz.or.id/repository/hacking-apps-for-roblox_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/roblox-crashes-when-cheat-engine-open_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/how-to-hack-roblox_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/mad-city-hack-roblox_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/how-to-get-free-daily-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/master-coin-free-spin_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/minecraft-windows-10-hacked-client_GM479516143.pdfIn PDF document text
    • http://library.imz.or.id/repository/free-robux-generator-the-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/how-to-get-free-gamepasses-roblox-2021_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/coin-master-free-spins-link-facebook_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/free-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/coin-master-email-rewards-link_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/coin-master-online-hack_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/free-outfit-in-roblox_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/get-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/how-to-hack-a-roblox-account-quick_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/coin-master-hacks-for-free-spins_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/gamesofficenet-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/roblox-dex-explorer-hack-script_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_off00002ee6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EE6 21680 bytes
SHA-256: a2b791090876de7fa0aabe50679de42eecb9c509ba23824c7a93f30415e74fa5
font_01_sfnt_off00005e6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E6E 19220 bytes
SHA-256: 849c3e84b10e950b93ea5ba826d3f389ccba8da839f1788493819afe4aaef29e

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