Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d6594d264b61daa…

MALICIOUS

PDF

35.7 KB Created: 2021-07-08 07:36:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: c6e1f69ca5211236346f2b0a2893796c SHA-1: 22674d8e6d3d213b50d083a5b658ccb5680e67f7 SHA-256: 8d6594d264b61daa5c8cb31eb14a133c0eac02fa85dba3fcbf8db715b444e353
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains multiple links to external websites, prominently featuring 'game hacks' and 'generators' for popular games like Coin Master and Roblox. The primary URL, http://netcdn.tw/app/406889139/coin-master-hack-without-verify-game-hack, is flagged as a lure for game hacks. This suggests the document's purpose is to trick users into visiting malicious sites, likely for credential harvesting or malware distribution.

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/406889139/coin-master-hack-without-verify-game-hack PDF link annotation
    • https://www.toyogas.com.tw/upload/files/legit-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://www.toyogas.com.tw/upload/files/coin-master-free-500-spins-link_GM406889139.pdfIn PDF document text
    • https://www.toyogas.com.tw/upload/files/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.toyogas.com.tw/upload/files/minecraft-realms-free_GM479516143.pdfIn PDF document text
    • https://www.toyogas.com.tw/upload/files/how-to-download-minecraft-windows-10-edition-for-free_GM479516143.pdfIn PDF document text
    • https://www.toyogas.com.tw/upload/files/is-roblox-bloxburg-free_GM431946152.pdfIn PDF document text
    • https://www.toyogas.com.tw/upload/files/roblox-cash-grab-simulator-cheat_GM431946152.pdfIn PDF document text
    • https://www.toyogas.com.tw/upload/files/free-robux-2021-august_GM431946152.pdfIn PDF document text
    • https://www.toyogas.com.tw/upload/files/robux-hack_GM431946152.pdfIn PDF document text
    • https://www.toyogas.com.tw/upload/files/roblox-hack-prison-life-v2-0_GM431946152.pdfIn PDF document text
    • https://www.toyogas.com.tw/upload/files/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • https://www.toyogas.com.tw/upload/files/roblox-hack-infinite-jump-new_GM431946152.pdfIn PDF document text
    • https://www.toyogas.com.tw/upload/files/treasure-hunt-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://www.toyogas.com.tw/upload/files/how-to-make-robux-for-free_GM431946152.pdfIn PDF document text
    • https://www.toyogas.com.tw/upload/files/coin-master-free-spins-link-download-free_GM406889139.pdfIn PDF document text
    • https://www.toyogas.com.tw/upload/files/free-rainbow-knife-roblox_GM431946152.pdfIn PDF document text
    • https://www.toyogas.com.tw/upload/files/free-spins-and-coins-coin-master-facebook_GM406889139.pdfIn PDF document text
    • https://www.toyogas.com.tw/upload/files/free-robux-generator-for-laptop_GM431946152.pdfIn PDF document text
    • https://www.toyogas.com.tw/upload/files/free-tiktok-followers-no-survey_GM835599320.pdfIn PDF document text
    • https://www.toyogas.com.tw/upload/files/roblox-money-hack-bloxburg_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_off0000334f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x334F 23184 bytes
SHA-256: 768518b076c277a712532fcd25ef8b714a69681241321cc98a8831190074fe42
font_01_sfnt_off00006754.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6754 18824 bytes
SHA-256: c25bf2ccf62891d313ed3764541f4ceda4a1232ebb6e41c4eeb59875a69821a3