Malicious PDF — malware analysis report

Static analysis result for SHA-256 779282f3e0febe4d…

MALICIOUS

PDF

34.2 KB Created: 2021-07-09 04:37:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 57ad3c60bcaec0774b97b263c0f2f21b SHA-1: acce3b2bd761f18665c61841297c546d445f78d1 SHA-256: 779282f3e0febe4d0b82f652f87fbd3efb1433bfd4f38d23a18e41d7a1e7c322
102 Risk Score

Malware Insights

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

This PDF document contains a large number of external links, many of which are related to hacking popular online games like Roblox and Coin Master. The document body explicitly mentions 'How To Hack Peoples Roblox Accounts' and includes a URL that appears to be a direct link to a hacking guide. The presence of a link farm and the ML classifier's high confidence score indicate a malicious intent to direct users to potentially harmful content or downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/431946152/how-to-hack-peoples-roblox-accounts-game-hack
    • https://silvterie.com.br/images/ckfinder/files/free-roblox-group-maker_GM431946152.pdf
    • https://silvterie.com.br/images/ckfinder/files/easy-ways-to-get-free-robux_GM431946152.pdf
    • https://silvterie.com.br/images/ckfinder/files/coin-master-hack-free-spins_GM406889139.pdf
    • https://silvterie.com.br/images/ckfinder/files/how-to-get-free-robux-easy-hack_GM431946152.pdf
    • https://silvterie.com.br/images/ckfinder/files/free-robux-no-offers_GM431946152.pdf
    • https://silvterie.com.br/images/ckfinder/files/how-to-get-free-robux-without-surveys_GM431946152.pdf
    • https://silvterie.com.br/images/ckfinder/files/coin-master-hack-cheat-generator-d_GM406889139.pdf
    • https://silvterie.com.br/images/ckfinder/files/coin-master-hack-org_GM406889139.pdf
    • https://silvterie.com.br/images/ckfinder/files/free-robux-the-easiest-way_GM431946152.pdf
    • https://silvterie.com.br/images/ckfinder/files/coin-master-tiradas-gratis_GM406889139.pdf
    • https://silvterie.com.br/images/ckfinder/files/coin-master-root-hack_GM406889139.pdf
    • https://silvterie.com.br/images/ckfinder/files/coin-master-hack-apk-2021-ios_GM406889139.pdf
    • https://silvterie.com.br/images/ckfinder/files/roblox-hack-game_GM431946152.pdf
    • https://silvterie.com.br/images/ckfinder/files/free-roblox-without-verification_GM431946152.pdf
    • https://silvterie.com.br/images/ckfinder/files/free-spins-and-coins-coin-master_GM406889139.pdf
    • https://silvterie.com.br/images/ckfinder/files/como-hackear-perfiles-de-roblox_GM431946152.pdf
    • https://silvterie.com.br/images/ckfinder/files/haktuts-coin-master-free-daily-spins_GM406889139.pdf
    • https://silvterie.com.br/images/ckfinder/files/coin-master-free-rare-cards_GM406889139.pdf
    • https://silvterie.com.br/images/ckfinder/files/roblox-how-to-get-for-free_GM431946152.pdf
    • https://silvterie.com.br/images/ckfinder/files/unlimited-spin-coin-master-hack_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002ebe.bin
956b0caef68e9c6815633a943e84f85f29fb71c053c29b7b1b3b6a3060324a13
pdf-font-stream PDF embedded font (sfnt) at offset 0x2EBE 22032 bytes
font_01_sfnt_off00005f8a.bin
455054d53819942057d20be51cc97c11c8340df0e33a1662ffdae35838096838
pdf-font-stream PDF embedded font (sfnt) at offset 0x5F8A 19392 bytes