Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5ba5de51a9520d8…

MALICIOUS

PDF

35.0 KB Created: 2021-07-08 16:20:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: c71b5b9c2c4e25195a004867093810f7 SHA-1: f4b905ff36cd183616e61dbdc6a65f7b05991198 SHA-256: e5ba5de51a9520d8817e5247d703105bdebf7778ac43f8d3c6e25828e4fb17fe
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/free-robux-script-game-hack PDF link annotation
    • http://royalindianjourney.co.in/uploaded_files/userfiles/files/como-hackear-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://royalindianjourney.co.in/uploaded_files/userfiles/files/google-how-do-you-get-robux_GM431946152.pdfIn PDF document text
    • http://royalindianjourney.co.in/uploaded_files/userfiles/files/robux-websites-2021_GM431946152.pdfIn PDF document text
    • http://royalindianjourney.co.in/uploaded_files/userfiles/files/100-free-tiktok-likes_GM835599320.pdfIn PDF document text
    • http://royalindianjourney.co.in/uploaded_files/userfiles/files/minecraft-free-download-android-apk-014-0_GM479516143.pdfIn PDF document text
    • http://royalindianjourney.co.in/uploaded_files/userfiles/files/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://royalindianjourney.co.in/uploaded_files/userfiles/files/how-to-make-clothes-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://royalindianjourney.co.in/uploaded_files/userfiles/files/free-robux-on-roblox-robuxian-hack_GM431946152.pdfIn PDF document text
    • http://royalindianjourney.co.in/uploaded_files/userfiles/files/coin-master-free-100-spin-link_GM406889139.pdfIn PDF document text
    • http://royalindianjourney.co.in/uploaded_files/userfiles/files/robux-theres-no-way-of-getting-free-robux_GM431946152.pdfIn PDF document text
    • http://royalindianjourney.co.in/uploaded_files/userfiles/files/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://royalindianjourney.co.in/uploaded_files/userfiles/files/free-roblox-acc_GM431946152.pdfIn PDF document text
    • http://royalindianjourney.co.in/uploaded_files/userfiles/files/free-robux-real-working_GM431946152.pdfIn PDF document text
    • http://royalindianjourney.co.in/uploaded_files/userfiles/files/how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://royalindianjourney.co.in/uploaded_files/userfiles/files/coin-master-2021-free-spins_GM406889139.pdfIn PDF document text
    • http://royalindianjourney.co.in/uploaded_files/userfiles/files/wahoo-gaming-co-free-robux_GM431946152.pdfIn PDF document text
    • http://royalindianjourney.co.in/uploaded_files/userfiles/files/hack-de-coin-master_GM406889139.pdfIn PDF document text
    • http://royalindianjourney.co.in/uploaded_files/userfiles/files/free-robux-with-no-downloading-games_GM431946152.pdfIn PDF document text
    • http://royalindianjourney.co.in/uploaded_files/userfiles/files/free-robux-no-email_GM431946152.pdfIn PDF document text
    • http://royalindianjourney.co.in/uploaded_files/userfiles/files/earn-free-spins-for-coin-master_GM406889139.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_off0000308b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x308B 22728 bytes
SHA-256: a34e75d770d08f9e1c7d079c828cd77dea418428d6c9ee97eb3c8d6c8d541e73
font_01_sfnt_off00006381.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6381 19116 bytes
SHA-256: b7ec675b0859f84f9d3687bec040beecaec8d80b831038dc5af6dc69bcb309d5

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