Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a5bf06b036c19d6…

MALICIOUS

PDF

35.0 KB Created: 2021-07-09 20:21:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 127cd71c457c5657dc87ee67f54cb1e4 SHA-1: d813bb1e3bbb4eb6e16afaa8bfdd32d57a54ad37 SHA-256: 6a5bf06b036c19d6561c24df210f4680a3db967a6cc7a6ac6e24e78954cf153e
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file 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 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.tw/app/431946152/robux-hacks-2021-game-hack PDF link annotation
    • http://aeridefense.com/image/data/files/is-there-any-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/free-injector-for-roblox-not-safe_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/nuevo-hack-de-robux-2021-funcionando_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/minecraft-hack-ios_GM479516143.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/roblox-free-shoes_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/how-to-download-minecraft-for-free-on-iphone_GM479516143.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/tiktok-free-steam-games_GM835599320.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/how-to-get-minecraft-for-free-ios_GM479516143.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/free-robux-generator-with-chat_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/coin-master-hack_GM406889139.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/can-you-give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/mc-hacks_GM479516143.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/android-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/free-tiktok-followers-and-likes_GM835599320.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/glitch-hack-roblox_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/how-to-hack-to-get-more-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/how-do-we-get-free-robux_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/http-roblox-hack-mobilegenerator-net_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/how-to-give-yourself-money-in-roblox-games-cheat-engine_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/best-jailbreak-hack-roblox_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_off00002fe6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FE6 22928 bytes
SHA-256: 7ac25d68e894059fc85a9f0660b8990fa5fae0a75fc187dc77bbee78fb9d6c53
font_01_sfnt_off00006375.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6375 19124 bytes
SHA-256: 5acc4cb5eca619de91ddb47cdc70e87d550a63f617f877071c9ac47b9f2637f1

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