Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5be9802c2403e96…

MALICIOUS

PDF

33.4 KB Created: 2021-06-30 05:56:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: a3ad1850ff6793b68e93af6b46ec2174 SHA-1: de3718ada891bffc0be2179ac2e1513b3b5babae SHA-256: d5be9802c2403e962b77fb6cee6e2dce9e2f5585796856b824cadf5a19b28a87
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external resources, many of which are SEO-optimized and related to game hacks and cheats for popular games like Roblox and Coin Master. The presence of a direct download URL and the ML classifier's high confidence score indicate a malicious intent to distribute potentially harmful content. The document body itself contains references to "Free Robux" and game hacks, reinforcing the lure.

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.co/app/431946152/free-robux-please-game-hack
    • https://opac.heritagejkt.org/repository/114-4-hacks_GM479516143.pdf
    • https://opac.heritagejkt.org/repository/roblox-dragon-ball-rage-hack-script_GM431946152.pdf
    • https://opac.heritagejkt.org/repository/best-free-clothes-creators-roblox_GM431946152.pdf
    • https://opac.heritagejkt.org/repository/coin-master-hack-apk-android_GM406889139.pdf
    • https://opac.heritagejkt.org/repository/ccv3-roblox-cheat-menu_GM431946152.pdf
    • https://opac.heritagejkt.org//repository/hack-coin-master-for-iphone_GM406889139.pdf
    • https://opac.heritagejkt.org/repository/apps-to-get-free-robux_GM431946152.pdf
    • https://opac.heritagejkt.org/repository/get-free-spins-in-coin-master_GM406889139.pdf
    • https://opac.heritagejkt.org/repository/robux-hack-script-in-inspect-code_GM431946152.pdf
    • https://opac.heritagejkt.org/repository/free-roblox-games-unblocked_GM431946152.pdf
    • https://opac.heritagejkt.org//repository/update-coin-master-free-spins_GM406889139.pdf
    • https://opac.heritagejkt.org//repository/free-robux-on-phone_GM431946152.pdf
    • https://opac.heritagejkt.org/repository/freespinandcoin-blogspot-com_GM406889139.pdf
    • https://opac.heritagejkt.org//repository/como-hack-coin-master_GM406889139.pdf
    • https://opac.heritagejkt.org/repository/how-to-hack-any-roblox-account-including-admins_GM431946152.pdf
    • https://opac.heritagejkt.org//repository/real-free-robux-codes_GM431946152.pdf
    • https://opac.heritagejkt.org//repository/static-moonactive-net-free-spins_GM406889139.pdf
    • https://opac.heritagejkt.org//repository/pokemon-go-free-pokecoins-xyz_GM1094591345.pdf
    • https://opac.heritagejkt.org//repository/free-robux-offers_GM431946152.pdf
    • https://opac.heritagejkt.org/repository/free-roblox-promo-codes-for-robux_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002caa.bin
42ef7c0bd685c853cce529dd623d6c453280af7334a0181921722bf5d7d108e8
pdf-font-stream PDF embedded font (sfnt) at offset 0x2CAA 22120 bytes
font_01_sfnt_off00005dc2.bin
febdc7d9b58a8f5ce5dc5375b2c9cd11fa7fa1fbf09dd55f49548e64a33317d8
pdf-font-stream PDF embedded font (sfnt) at offset 0x5DC2 18944 bytes