Malicious PDF — malware analysis report

Static analysis result for SHA-256 e86092d8a67a386f…

MALICIOUS

PDF

33.9 KB Created: 2021-07-03 19:16:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: bdcada8b5210252d6188306db6d69ac2 SHA-1: dbf1b69ff521d35a0e6c524512da4f07a5ed26c4 SHA-256: e86092d8a67a386f3c96d196a798f1770f78e007a3a27f2d745d3d2d48072c78
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/406889139/coin-master-tool-hack-game-hack PDF link annotation
    • http://digilib-pps.unja.ac.id/repository/near-tiktok-free-fire_GM835599320.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/how-to-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/coin-master-daily-free-spins-25_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/coin-master-online-hack-no-survey-no-password_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/como-hackear-tener-robux-gratis-con-bots_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/roblox-fun-robux_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/invisible-hack-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/roblox-free-download5mio_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-halloween-costumes-for-roblox_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/robux-gift-card-free_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/roblox-bee-game-hack-to-play_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/how-to-hack-roblox-treasure-hunt-simulator_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/link-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-spins-and-coins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/wizard-life-roblox-money-hack_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/script-fly-roblox-hack_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/who-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/what-is-exploiting-in-roblox_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/latest-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/get-free-spins-coin-master-link_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_002_off00002fc0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2FC0 22644 bytes
SHA-256: 65e2a01c33ef1698cec0cd57dcb3049aa93d280bb54735f86db4a66901ecb871
font_01_sfnt_off00006258.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6258 18080 bytes
SHA-256: e08d712d3c7717e534c8527a13ecdf608e6cf7fb005f990d3f063776d4a09a25

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