Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a30f5f10055197f…

MALICIOUS

PDF

43.9 KB Created: 2021-06-03 06:46:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 4b02ca5738150db59260706d6fdb8744 SHA-1: a9c95b10ebdfbdc84bc8dec0fdb1c12814ba8184 SHA-256: 6a30f5f10055197f6d9f2df305b64dfa114ee293e6b72ad0874a643c684e2bfa
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for a game hack, directing users to a malicious URL. The ML classifier strongly flagged this PDF as malicious, and multiple heuristics indicate a redirection to a potentially harmful site. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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 https://netcdn.online/app/406889139/2021-no-human-verification-hack-for-coin-master-game-hack PDF link annotation
    • https://www.tdbaska.hr/files/www-free-robux_GM431946152.pdfIn PDF document text
    • https://www.tdbaska.hr/files/free-roblox-app_GM431946152.pdfIn PDF document text
    • http://www.tdbaska.hr/files/minecraft-realms-free-trial_GM479516143.pdfIn PDF document text
    • https://www.tdbaska.hr/files/free-spins-on-coin-master-link_GM406889139.pdfIn PDF document text
    • https://www.tdbaska.hr/files/free-limiteds-roblox_GM431946152.pdfIn PDF document text
    • https://www.tdbaska.hr/files/free-robux-android_GM431946152.pdfIn PDF document text
    • https://www.tdbaska.hr/files/free-minecraft-survival-server_GM479516143.pdfIn PDF document text
    • https://www.tdbaska.hr/files/get-me-free-robux_GM431946152.pdfIn PDF document text
    • https://www.tdbaska.hr/files/free-roblox-girl-clothes_GM431946152.pdfIn PDF document text
    • http://www.tdbaska.hr/files/free-roblox-clothes_GM431946152.pdfIn PDF document text
    • http://www.tdbaska.hr/files/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://www.tdbaska.hr/files/free-face-roblox_GM431946152.pdfIn PDF document text
    • https://www.tdbaska.hr/files/tiktok-likes-free-trial_GM835599320.pdfIn PDF document text
    • http://www.tdbaska.hr/files/is-there-an-actual-hack-that-work-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.tdbaska.hr/files/minecraft-bedrock-client_GM479516143.pdfIn PDF document text
    • http://www.tdbaska.hr/files/offers-for-robux_GM431946152.pdfIn PDF document text
    • http://www.tdbaska.hr/files/coin-master-hack-software_GM406889139.pdfIn PDF document text
    • https://www.tdbaska.hr/files/coin-master-links-that-don-t-expire_GM406889139.pdfIn PDF document text
    • https://www.tdbaska.hr/files/hack-minecraft_GM479516143.pdfIn PDF document text
    • https://www.tdbaska.hr/files/roblox-apocalypse-rising-hack_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
stream_004_off00004f85.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F85 24428 bytes
SHA-256: 48e7755fb4f5bcf2fd9f2322a9bf9f1afedd7319fea1071b9ffbae2b5417a98e
font_01_sfnt_off0000879f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x879F 18816 bytes
SHA-256: a5b7142760a7e34de8b9a60e3559d331953dfe293005987c3773ce22c08c12b7