Malicious PDF — malware analysis report

Static analysis result for SHA-256 59d219f6e0dec08b…

MALICIOUS

PDF

35.5 KB Created: 2021-06-19 09:32:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 3d935144a078a2d4d010373655caf93e SHA-1: c604f8cdb6349ffedd39db45fe9eb6a1c90faabb SHA-256: 59d219f6e0dec08bd7c86a2df6dfb5c6c734f40112c92a88448f827e0e967d01
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a lure for 'free Robux' and game hacks, directing users to a malicious URL. The ML classifier strongly indicated maliciousness, and the embedded URL is a clear indicator of a phishing or scam attempt. No scripts were extracted, but the document's structure and content suggest it's designed to trick users into visiting a compromised 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/431946152/2021-free-robux-no-website-2021-game-hack PDF link annotation
    • https://learnwmf.org/image/data/files/blogspot-coin-master_GM406889139.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/free-exploits-for-roblox_GM431946152.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/how-to-get-free-clothes-on-roblox_GM431946152.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/free-multiplayer-minecraft-server_GM479516143.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/how-do-i-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/coin-master-hack-tool-v1-9-download-free_GM406889139.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/how-to-get-free-robux-easy-on-android_GM431946152.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/coin-master-cards-hack_GM406889139.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/how-do-we-get-free-robux_GM431946152.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/pubg-uc-new-redeem-code_GM1330123889.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/hex-number-gives-free-robux_GM431946152.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/minecraft-free-app_GM479516143.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/free-robux-apps-that-work_GM431946152.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/free-spins-and-coins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/robux-free-2021_GM431946152.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/how-to-hack-coin-master-android_GM406889139.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/coin-master-hack-app-download-free_GM406889139.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/coin-master-daily-free-spin-app_GM406889139.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/free-robux-now_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_off0000310f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x310F 22704 bytes
SHA-256: 23ecabfac5738e3f07fa25e879164580664b78e1d733514450b0cd5181b36ee7
font_01_sfnt_off00006414.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6414 19540 bytes
SHA-256: 18d06319747b37b8c080e8e80fae67173e2556daeb350f5f53e1153f5674a8b8

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