Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e9e947a7acc129a…

MALICIOUS

PDF

33.9 KB Created: 2021-06-30 05:48:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 6ec09a5b8705d76302bab80b354e2566 SHA-1: 1a76d3893fe5ff14cd4061deeea088393a58705b SHA-256: 2e9e947a7acc129a68aa36b11e0eb88bd29da7399daafbf00becb9bd89a89554
182 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

This PDF document was flagged as malicious by an ML classifier. It uses a clipboard-command (paste-and-run) lure. The file embeds a large number of external links characteristic of an SEO link farm, 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 6

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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/free-item-game-roblox-twitch-game-hack PDF link annotation
    • http://balitgetas.co.id/pustaka/repository/how-to-get-minecraft-windows-10-edition-for-free_GM479516143.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/minecraft-hack-mod_GM479516143.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/pasos-para-hackear-coins-master_GM406889139.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/coin-master-coins_GM406889139.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/free-spins-coin-master-daily_GM406889139.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/free-minecraft-account-and-password_GM479516143.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/how-to-get-free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/como-hackear-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/free-robux-live_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/ant-roblox-jailbreak-teleport-hack_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/when-pubg-uc-available_GM1330123889.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/coin-master-get-free-spins_GM406889139.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/how-to-get-coin-master-card-free_GM406889139.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/free-pin-to-redeem-roblox_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/robux-hack-2021-febuary-11_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/minecraft-pe-hacks-2021_GM479516143.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/coin-master-free-coins-generator_GM406889139.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/daily-free-spin-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
font_00_sfnt_off00002f67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F67 21496 bytes
SHA-256: adbe516fb82b9989dd8252cbbd294b3691eae923d6b2aeda6d26028348311725
font_01_sfnt_off00005e53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E53 19464 bytes
SHA-256: 1b8d115623068a1882750fc44e3599cf3b7d935fcf8abae0b126e23409365b79

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