Malicious PDF — malware analysis report

Static analysis result for SHA-256 f442827fa0a9b079…

MALICIOUS

PDF

34.6 KB Created: 2021-07-05 04:48:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: b6748fbc95c6cc00be9958ca2ebf184f SHA-1: c19b362b080b7b1008710cc7db46f0390b9e09f0 SHA-256: f442827fa0a9b079cbfecdf00397c7674fa5596e953125cba52a92e055f4a06c
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains numerous links and text related to game hacks and exploits, specifically mentioning Roblox and Coin Master. It impersonates brands like Microsoft and uses lures such as 'free generator' or 'download now' to entice users. The primary goal appears to be credential phishing or directing users to malicious sites that may distribute further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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.
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: http://netcdn.tw/app/431946152/free-roblox-exploits-game-hack.
  • 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/431946152/free-roblox-exploits-game-hack PDF link annotation
    • http://pustaka.bbppketindan.info/repository/descargar-hack-roblox-funcional_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/roblox-free-no-sign-in_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/coin-hackhub-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/minecraft-pe-hack-client-ios_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/roblox-hack-2021-download_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/hack-spin-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/unlimited-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/website-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/hacks-for-roblox-prison-life_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/skyline-roblox-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/eran-robux-free-robux-vrobux-com-ytb_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/coin-master-hack_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/how-to-get-free-robux-with-guddinfo_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/totally-free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/free-robux-giveaway-live_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/minecraft-win-10-free_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/games-that-give-you-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
font_00_sfnt_off00002f5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F5F 22652 bytes
SHA-256: 00f388f59040a75090cf212a684dd42a5ff2cd37441f351edfcf5b4412a60eda
font_01_sfnt_off00006221.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6221 19048 bytes
SHA-256: eb81442bbc7cd229a2b7532d5a896b083ca3aa7ccc5f3f0170b3e0789244aa12

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