Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ff41c80f6821c14…

MALICIOUS

PDF

42.6 KB Created: 2021-05-13 05:40:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 1650a9d0eb4a0f5593e9769bd0c1b62c SHA-1: f918598732aaea0607ecfedd0a849f6de6d4dbeb SHA-256: 5ff41c80f6821c14fce61cd7f32072e290216d3ea19d27e18ca55f5b436adf2c
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 0.9971

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/406889139/coin-master-free-spin-link-today-2021-game-hack PDF link annotation
    • http://wadimor.co.id/media/imagesfiles/free-coin-master-spins-without-human-verification_GM406889139.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/code-free-robux_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/roblox-bux-free_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/minecraft-world-free-download_GM479516143.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/coin-master-free-spin-and-trading-group_GM406889139.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/coinmaster-hack_GM406889139.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/best-hacked-client_GM479516143.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/free-spins-and-coins-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/coin-master-hack-app-download-free_GM406889139.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/free-robux-no-apps_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/robux-free-online_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/minecraft-xray-hack_GM479516143.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/coin-master-free-spin-and-coins-links-home_GM406889139.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/coin-master-hack-injection_GM406889139.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/coin-master-cheats-for-free-spins_GM406889139.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/master-coin-free-link_GM406889139.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/blox-rewards_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/how-to-get-coin-master-free-spins-in-email_GM406889139.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/coin-master-code-hack_GM406889139.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/apps-to-get-free-robux_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
stream_003_off000048b4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48B4 25176 bytes
SHA-256: 31b00f175e17e797657057a01182e6168f142f7ae4225e5eb8af0133b0cbc820
font_01_sfnt_off0000826d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x826D 18812 bytes
SHA-256: 209d45ed87732d827821998a5283e56b95c39a3af4032faff2e6da7d3e76f78f

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