Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba842ce6378d8fa0…

MALICIOUS

PDF

34.5 KB Created: 2021-07-03 12:40:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: a391e0712c12f6999a00194e8db41585 SHA-1: 17f36724fd5dff513266657f003e486aab5f8971 SHA-256: ba842ce6378d8fa083c7fb3466825d3fef0ef18fa9e8f6e81a3e5a4c5aac5744
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 0.9980

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/best-hacked-client-game-hack PDF link annotation
    • http://perpus.wdh.ac.id/repository/robux-for-free-not-fake-bt-scammer-kid2021_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/elemental-wars-roblox-cheats_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/coin-master-spin-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/minecraft-wurst-hacked-client_GM479516143.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/me-enfrente-a-un-hacker-de-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/how-to-make-a-free-roblox-shirt_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/roblox-redeem-robux_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/roblox-free-roblox-cards_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/how-to-hack-someone-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/free-robux-roblox-codes_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/roblox-gta-5-money-hack-2021_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/coin-master-free-spins-and-cards_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/60-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/money-hack-restaurant-tycoon-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/roblox-icebreaker-hack_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/coin-master-game-hack-version-download_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/coin-master-cheat-engine-hack_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/discord-roblox-fr-hack_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/how-to-get-free-robux-in-alternate-route_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_off00003165.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3165 22664 bytes
SHA-256: e074c3c12dbaff20d3d56bc70844e2e815c95d852f1d9ab30b0e7b05a1ccfb42
font_01_sfnt_off000063a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63A0 18492 bytes
SHA-256: 903a763f7ab233d5cbfd476072903032bf39c0f6a32515afc0c758fc5aff1474

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