Malicious PDF — malware analysis report

Static analysis result for SHA-256 cabe651dcebe205d…

MALICIOUS

PDF

35.0 KB Created: 2021-06-22 07:39:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 4c4b562824af1423addc14e011b51d11 SHA-1: faa53104f6f9f6436c84291ac8ef1d1d812d01ca SHA-256: cabe651dcebe205dc5568ae55dfc5fb9f950e1f8c57367b2a00cd8fdc563c9df
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.co/app/431946152/free-roblox-accounts-2021-rich-game-hack PDF link annotation
    • https://loba.com.vn/public/upload/files/coin-master-free-spin-and-coins-links_GM406889139.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/how-to-get-free-tiktok-followers_GM835599320.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/robloxheroxyz-free-robux_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/free-robux-complete-free-hack_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/dev-roblox-cheats_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/robux-free-2021_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/new-roblox-swordburst-2-hack_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/coin-master-hack-that-actually-works_GM406889139.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/how-to-get-roebucks-on-roblox_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/roblox-skins-boy-free_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/free-tiktok-followers-generator_GM835599320.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/minecraft-windows-10-hacked-client_GM479516143.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/one-for-all-free-shop-t-schirts-roblox_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/blogger-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/free-spins-coin-master-links-thursday-november-28-2021_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_off0000323a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x323A 21640 bytes
SHA-256: fbcb164fd93a64487188bb47c66bfcee85c021fa538d09fad60500db880f1582
font_01_sfnt_off0000620f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x620F 19580 bytes
SHA-256: 957753acd3a4c95721efaa8eb074e358136db84e24ad384ea269e43047fc5ecd

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