Malicious PDF — malware analysis report

Static analysis result for SHA-256 4822400c82ea1a09…

MALICIOUS

PDF

35.6 KB Created: 2021-06-20 05:57:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: e42c022b0aa11bba2d885deda4012298 SHA-1: bffe5e032f641660b54dc72ce23d431f7fb77e56 SHA-256: 4822400c82ea1a09404b4f9d77be888334f9f7a5df4c6c632499b9a81d45178d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a lure for game hacks, specifically linking to 'roblox-hack-infinite-jump-new-game-hack'. This link redirects to a suspicious URL, http://netcdn.co/app/431946152/roblox-hack-infinite-jump-new-game-hack, which is likely a malicious landing page designed to deliver a payload or phish for credentials. The ML classifier also strongly flagged this PDF as malicious.

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/roblox-hack-infinite-jump-new-game-hack PDF link annotation
    • https://www.tiancom.com.tw/upload/files/minecraft-bedrock-free-download-pc_GM479516143.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/is-minecraft-bedrock-free_GM479516143.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/how-to-get-free-robux-for-real_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/coin-master-hack-version-download-ios_GM406889139.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/free-robux-hack-without-downloading_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/how-to-sue-roblox_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/roblox-fun-robux_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/hackear-coin-master_GM406889139.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/how-to-buy-robux-for-free_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/free-minecraft-server-hosting-24-7_GM479516143.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/free-robux-discord_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/coin-master-free-spins-daily_GM406889139.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/coin-master-hacker-club_GM406889139.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/coin-master-free-spins-hack-download_GM406889139.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/roblox-cheat-codes-for-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/free-followers-on-tiktok_GM835599320.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/haktuts-coin-master-free-spin-today_GM406889139.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/roblox-scam_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/how-to-hack-a-minecraft-server-and-make-yourself-op_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_off0000321b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x321B 22496 bytes
SHA-256: 410ce2426b795e13d55ac6970c145d9b42334088eb5c3c32cc2dd8f8222dbd87
font_01_sfnt_off00006431.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6431 19784 bytes
SHA-256: 725494beb222c90023789c8eb8fc01e0f3be9b02847517a1b0909e6058eb7f82