Malicious PDF — malware analysis report

Static analysis result for SHA-256 91a19abe39964194…

MALICIOUS

PDF

35.1 KB Created: 2021-06-25 16:55:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 9b4130299796d8bbf68ee31026977018 SHA-1: 49bc8b5e07af95c85401d03a541be6a3cb091ef2 SHA-256: 91a19abe3996419442ed6f4ab319e5365fce94502ef29a060e72e4924ed25f91
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains embedded links that lure users with promises of game hacks and cheats. These links redirect to external websites, such as http://netcdn.co/app/431946152/apx-roblox-hack-game-hack, which are likely hosting malicious content or further redirects. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed for user deception and potential exploitation.

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/apx-roblox-hack-game-hack PDF link annotation
    • http://artistaone.co/userfiles/files/coin-master-hack-without-verification-code_GM406889139.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/you-promised-my-son-free-robux_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/codes-for-roblox-weight-lifting-simulator-3-hack_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/can-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/roblox-free-robux-redeem-codes-2021_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/how-to-hack-roblox-on-mobile_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/roblox-arc-of-elements-hack_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/coin-master-hack-for-ios_GM406889139.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/roblox-free-clothes-hack_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/coinmaster-free-cards_GM406889139.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/minecraft-hacker-mask_GM479516143.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/roblox-jump-hack-script_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/roblox-boku-no-roblox-remastered-hack-script_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/coin-master-free-2021_GM406889139.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/coin-master-daily-free-spins-today_GM406889139.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/free-robux-generator-without-survey-or-human-verification_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/comment-hack-booga-booga-roblox_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000031b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31B5 22948 bytes
SHA-256: 6cf209be2af651a072d39555c86d1d2d154015d3f19031de32881dcf3c6cedd3
font_01_sfnt_off000064d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64D4 18832 bytes
SHA-256: f308662a73603c5136bdf9bed71670e9a1667bd03b42dac2cab1c2fc05df6f0e

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