Malicious PDF — malware analysis report

Static analysis result for SHA-256 87a9301e8acebf84…

MALICIOUS

PDF

35.6 KB Created: 2021-07-01 16:17:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 954b9f327505d0824dbc096ecfda37f6 SHA-1: 8d2e6f9a0ae8667c4dadcdae12a91584f645e67e SHA-256: 87a9301e8acebf8465a7eb0a43ca59835820022414e2f620ec5386c68ac7ca2d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a game hack lure to trick users into clicking malicious links. The primary link, http://netcdn.co/app/431946152/roblox-hack-robux-free-deutsch-download-game-hack, is designed to redirect users to potentially harmful content. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest an attempt to deliver a malicious payload or redirect to a phishing site.

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/roblox-hack-robux-free-deutsch-download-game-hack PDF link annotation
    • https://allhimalayantreks.com/userfiles/files/get-me-free-robux_GM431946152.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/free-minecraft-hosting-24-7_GM479516143.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/how-to-get-minecraft-for-free-on-iphone_GM479516143.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/coin-master-hack-lost-world-2021_GM406889139.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/free-online-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/daily-free-spins_GM406889139.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/block-best-robux_GM431946152.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/is-minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/free-coin-master-spins-blog_GM406889139.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/hacks-para-tener-robux-gratis-2021_GM431946152.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/roblox-assassin-hack-knife_GM431946152.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/how-to-get-free-hair-in-roblox_GM431946152.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/coin-master-facebook-hack_GM406889139.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/client-minecraft_GM479516143.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/veil-roblox-exploit-free-download_GM431946152.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/do-you-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/how-to-get-free-coins-on-flip-master_GM406889139.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/minecraft-games-online-free-no-download_GM479516143.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/how-you-get-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_off00003086.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3086 22928 bytes
SHA-256: ca20600876d8b63e48fba4d3dfbdcc02c7c6ae8fdf59718057c88607483de68b
font_01_sfnt_off00006402.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6402 19736 bytes
SHA-256: a396cc61dd2cf4da4cf2a686f3f8c56ee112598409693eaf95d78d9141126f51