Malicious PDF — malware analysis report

Static analysis result for SHA-256 36708583f66ab938…

MALICIOUS

PDF

32.3 KB Created: 2021-07-04 10:09:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 2e0c818e60016c173ecd113afb36e594 SHA-1: c82f76496a06b3e1baa3b3b1645066cd101a73d1 SHA-256: 36708583f66ab9385f0c6146e1eadaef1082593c780992c48a54ea1d66c2a460
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-confidence heuristic indicating it links to a 'free generator / game hack' redirector. The document body and extracted URLs reinforce this, showing lures related to game hacks and generators. The primary malicious action appears to be directing the user to the URL http://netcdn.tw/app/431946152/robux-rbx-calc-free-game-hack, which likely serves as a gateway to malware or a phishing page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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-rbx-calc-free-game-hack PDF link annotation
    • https://new-era.com.tw/image/data/files/free-online-dater-clothes-roblox_GM431946152.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/roblox-free-robux-event_GM431946152.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/hack-robux_GM431946152.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/pubg-uc-wholesale_GM1330123889.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/how-to-get-free-robux-ipad-mini_GM431946152.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/rbxoffers-com-free-robux_GM431946152.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/piano-roblox-cheat-codes_GM431946152.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/coin-master-hack-apk-35-18_GM406889139.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/minecraft-free-ios-2021_GM479516143.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/esp-xray-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/roblox-robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/youtube-fly-hack-roblox-2021-feb_GM431946152.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/coin-master-free-spins-link-today-ios_GM406889139.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/minecraft-windows-10-hacks_GM479516143.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/free-minecraft-shaders_GM479516143.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/roblox-hack-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/minecraft-creative-mode-free_GM479516143.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/lastrick-com-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/bloxawards-com-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/minecraft-free-download-no-virus_GM479516143.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_off00002a06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A06 22012 bytes
SHA-256: 9594fe07212d4c1f206e764b475d8b5e8c64a71a9c14aa80c7255a7f3401c733
font_01_sfnt_off00005ada.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5ADA 18604 bytes
SHA-256: 87055c7f93bf8d64e495f70464343ded1755406e8d8a47e7f5c36a308df51d89

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