Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a8e0fcb2affe2d3…

MALICIOUS

PDF

35.4 KB Created: 2021-06-27 06:37:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 62bdff4ece8fd5c745037ec1cf7bd8a9 SHA-1: 965150db49433d15adf98482ec6a925ad56b122b SHA-256: 1a8e0fcb2affe2d3d188cb653df7dd44c2980571190b12e54d36674f9a930e51
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains lures for 'free Robux hack' and 'game hack', directing users to a suspicious URL. The ML classifier strongly flagged this PDF as malicious, and heuristics indicate it's designed as a redirector to potentially malicious content. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to trick users into visiting a site that likely hosts malware or phishing content.

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/free-robux-hack-online-game-hack PDF link annotation
    • http://elearning3.mtsn3subang.com/__statics/gudangsoal/files/coin-master-official-website_GM406889139.pdfIn PDF document text
    • http://elearning3.mtsn3subang.com/__statics/gudangsoal/files/descargar-hack-roblox-funcional_GM431946152.pdfIn PDF document text
    • http://elearning3.mtsn3subang.com/__statics/gudangsoal/files/coinmaster-free-spins-link_GM406889139.pdfIn PDF document text
    • http://elearning3.mtsn3subang.com/__statics/gudangsoal/files/free-modded-minecraft-server_GM479516143.pdfIn PDF document text
    • http://elearning3.mtsn3subang.com/__statics/gudangsoal/files/how-many-free-spin-links-is-there-for-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning3.mtsn3subang.com/__statics/gudangsoal/files/free-robux-kid-friendly-no-human-verification_GM431946152.pdfIn PDF document text
    • http://elearning3.mtsn3subang.com/__statics/gudangsoal/files/minecraft-hax-download-no-virus_GM479516143.pdfIn PDF document text
    • http://elearning3.mtsn3subang.com/__statics/gudangsoal/files/roblox-games-with-no-anti-cheat_GM431946152.pdfIn PDF document text
    • http://elearning3.mtsn3subang.com/__statics/gudangsoal/files/how-can-i-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://elearning3.mtsn3subang.com/__statics/gudangsoal/files/how-to-block-someone-on-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning3.mtsn3subang.com/__statics/gudangsoal/files/coin-master-hack-download-2021_GM406889139.pdfIn PDF document text
    • http://elearning3.mtsn3subang.com/__statics/gudangsoal/files/coin-and-spin_GM406889139.pdfIn PDF document text
    • http://elearning3.mtsn3subang.com/__statics/gudangsoal/files/how-to-get-free-robux-without-downloading-any-apps_GM431946152.pdfIn PDF document text
    • http://elearning3.mtsn3subang.com/__statics/gudangsoal/files/coin-master-get-free-cards_GM406889139.pdfIn PDF document text
    • http://elearning3.mtsn3subang.com/__statics/gudangsoal/files/minecraft-modded-client_GM479516143.pdfIn PDF document text
    • http://elearning3.mtsn3subang.com/__statics/gudangsoal/files/coin-master-free-spins-1-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning3.mtsn3subang.com/__statics/gudangsoal/files/mcpe-master-unlimited-coins-hack-apk_GM406889139.pdfIn PDF document text
    • http://elearning3.mtsn3subang.com/__statics/gudangsoal/files/coin-master-hack-without-verification-code_GM406889139.pdfIn PDF document text
    • http://elearning3.mtsn3subang.com/__statics/gudangsoal/files/uprobuxcom-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning3.mtsn3subang.com/__statics/gudangsoal/files/robux-offer-wall_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_002_off000032b9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32B9 22620 bytes
SHA-256: e79e444286c66665dc56d19fd3d036fda72fef2beb5e953322264d253bc15009
font_01_sfnt_off00006556.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6556 19080 bytes
SHA-256: 93edfc55f108e49652c6990edc26cef1336881dc89f95db6cc5db2e26f56a0ed

Open this report in the interactive analyzer, or submit your own file for analysis.