Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad5cd5ea4b1c3144…

MALICIOUS

PDF

33.4 KB Created: 2021-07-09 08:26:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 7ff94c1b497683fa5e57935e7497f2fa SHA-1: e079950df964f4bc1ba8e5bae85cf0ff02517012 SHA-256: ad5cd5ea4b1c31445a429e5173b7c429effc6cf0686b17997d001a1e8a1b2bb5
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to game hacks and free in-game currency, directing users to a suspicious URL. The ML classifier strongly indicates maliciousness, and the presence of numerous similar URLs suggests a phishing or scam campaign. No scripts were extracted, but the document's structure and embedded URLs point towards a social engineering attack.

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/how-to-use-free-models-on-roblox-game-hack PDF link annotation
    • https://fridaytravelnepal.com/userfiles/files/coins-master-hack_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/minecraft-apk-free-download_GM479516143.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/coin-master-hack-org_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-roblox-accounts-2021-april_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/coin-master-400-spin-link-hack_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/no-scam-free-robux_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-maio-roblox_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/roblox-dominus-free_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-spin-link-coin-master-today_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/robux-hack-with-no-human-verification_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/coin-master-daily-gift-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/coin-master-hack-app_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/update-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/coin-master-rewards-free-spins_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/how-to-get-free-skins-in-roblox_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/demon-roblox_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/coin-master-heaven-free-spins_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/roblox-hack-minig-simulator-v3rmillion_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/roblox-rewards-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_off00002d91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D91 21540 bytes
SHA-256: 002ec153ab4d88f7c502269e74fcbad3aa20c0b9a2d2bde5c7cc037dd1a0f312
font_01_sfnt_off00005cd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CD4 19184 bytes
SHA-256: 0c4c43802a6d301fb434dff94c1f42f9987ba3f3f702760fff4bd06dcdd68f9f

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