Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe5b5bef7e9e03dc…

MALICIOUS

PDF

34.9 KB Created: 2021-07-03 18:27:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: ff1c172ac2215e606f4abcd8be5002ec SHA-1: ab20b50c8abf4aba690f2c767b42a54845b90e00 SHA-256: fe5b5bef7e9e03dcccfd0a6faf7eebea787517deeeff888aa374e54ee204fc68
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a prominent link disguised as a game hack generator, which is a common lure for phishing or malware distribution. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' directly indicates this malicious intent. While no scripts were extracted, the embedded URL is the primary indicator of compromise, likely leading to a site that hosts further malicious content or exploits.

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-free-2021-spin-link-game-hack PDF link annotation
    • https://www.liputanbali.com/assets/CKImages/files/bbg-free-robux_GM431946152.pdfIn PDF document text
    • https://www.liputanbali.com/assets/CKImages/files/free-robux-pins_GM431946152.pdfIn PDF document text
    • https://www.liputanbali.com/assets/CKImages/files/free-robux-no-verification-2021-android_GM431946152.pdfIn PDF document text
    • https://www.liputanbali.com/assets/CKImages/files/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • https://www.liputanbali.com/assets/CKImages/files/www-roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.liputanbali.com/assets/CKImages/files/roblox-how-to-get-free-followers_GM431946152.pdfIn PDF document text
    • https://www.liputanbali.com/assets/CKImages/files/coin-master-hack-tool-v1-9-download-free-pc_GM406889139.pdfIn PDF document text
    • https://www.liputanbali.com/assets/CKImages/files/free-apps-similar-to-roblox_GM431946152.pdfIn PDF document text
    • https://www.liputanbali.com/assets/CKImages/files/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • https://www.liputanbali.com/assets/CKImages/files/invisible-hack-roblox-prison-life-withe-cheat-engine_GM431946152.pdfIn PDF document text
    • https://www.liputanbali.com/assets/CKImages/files/blogger-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://www.liputanbali.com/assets/CKImages/files/adidas-roblox-shirt-free-design-high-resoulution_GM431946152.pdfIn PDF document text
    • https://www.liputanbali.com/assets/CKImages/files/i-want-robux_GM431946152.pdfIn PDF document text
    • https://www.liputanbali.com/assets/CKImages/files/real-free-robux-codes_GM431946152.pdfIn PDF document text
    • https://www.liputanbali.com/assets/CKImages/files/cara-ngembalikin-akun-roblox-yg-sudah-di-hack_GM431946152.pdfIn PDF document text
    • https://www.liputanbali.com/assets/CKImages/files/como-sacar-buen-puntaje-en-juego-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://www.liputanbali.com/assets/CKImages/files/www-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.liputanbali.com/assets/CKImages/files/minecraft-redeem-code-free-2021_GM479516143.pdfIn PDF document text
    • https://www.liputanbali.com/assets/CKImages/files/free-catalog-stuff-in-roblox_GM431946152.pdfIn PDF document text
    • https://www.liputanbali.com/assets/CKImages/files/free-minecraft-java-edition-codes_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_off0000311b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x311B 22792 bytes
SHA-256: e6e1078cf622ed53c81779b0f3dd4cd54a450f9b3c4bb584ecb88f12f0e9c89f
font_01_sfnt_off00006445.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6445 18748 bytes
SHA-256: 96324e6ce0c81689c6b9eecc120e41c8c4a64b67d53a9c8495a7c5a7aa900936