Malicious PDF — malware analysis report

Static analysis result for SHA-256 49e2ec9a7457df4b…

MALICIOUS

PDF

48.2 KB Created: 2021-06-04 03:04:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 471b56182d0b3fd6da2bcc79878e43d1 SHA-1: 0b5f405ea83538bf37e366c406e219d414071eae SHA-256: 49e2ec9a7457df4b57f6f2503aeaa46abaa970085d6112e82f66b006e3b48347
122 Risk Score

Malware Insights

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

The PDF document contains a lure for game hacks and free currency, employing a fake CAPTCHA to trick users into clicking malicious links. The primary link, https://netcdn.online/app/431946152/robux-hack-without-human-verification-and-survey-game-hack, likely leads to a further stage of infection or phishing. The document's structure and content strongly suggest a social engineering attack aimed at tricking users into executing further malicious actions.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

Heuristics 5

  • 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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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.online/app/431946152/robux-hack-without-human-verification-and-survey-game-hack PDF link annotation
    • http://www.library.gkigadingserpong.org/repository/coin-master-hack-unlimited-spins-apk-download_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/robuxglobalcom_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/coin-master-hack-tool-no-survey_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/como-hackear-coin-master-espaol_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-robux-com-2021_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-roblox-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-robux-safe_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-coins-on-coin-master-generator_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/how-do-you-get-free-pet-food-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-game-hack-app_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/hacked-roblox-game_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/old-roblox-accounts-for-free_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/ear-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/minecraft-112-2-hacked-client_GM479516143.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-free-spin-facebook-link_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/robux-converter_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/how-can-you-get-free-robux_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005428.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5428 24232 bytes
SHA-256: 5e9d6ade1389c12d495b32ac971f622462924593f4039b026bf8292b8691a630
font_01_sfnt_off00008bb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BB2 2840 bytes
SHA-256: 30dce2b9c1950da345d7fed8f00c38887adfa2f2ddecc31775af2315e819ac37
font_02_sfnt_off00009565.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9565 19696 bytes
SHA-256: 85884ebc6266f40f419698917903695153f0c6fa450138c7171cb5a1adcbe924

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