Malicious PDF — malware analysis report

Static analysis result for SHA-256 df46b4241a148f34…

MALICIOUS

PDF

34.2 KB Created: 2021-06-27 14:45:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 96a63f9756868d674891e33c2b996dfa SHA-1: 57b0dcfe2b2f5e0ff6dd4867b8efc972a6a21109 SHA-256: df46b4241a148f34ff7b83d256273b8c6408ed5e5ffc6b43dc9d73d1f1314c76
102 Risk Score

Malware Insights

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

This PDF document exhibits characteristics of a malicious lure, employing a large number of external links to pages related to game cheats and hacks, alongside a call-to-action phrase suggesting a download. The ML classifier also flagged this PDF as malicious with high confidence. The primary goal appears to be directing users to external sites that may host further malicious content or scams.

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/roblox-free-hoodie-game-hack
    • https://kldcardio.ru/images/free-roblox-skin-generator_GM431946152.pdf
    • https://kldcardio.ru/images/how-to-make-a-free-cam-roblox_GM431946152.pdf
    • https://kldcardio.ru/images/how-to-make-a-group-in-roblox-for-free_GM431946152.pdf
    • https://kldcardio.ru/images/free-robux-no-need-to-do-anything_GM431946152.pdf
    • https://kldcardio.ru/images/code-hack-roblox-jailbreak_GM431946152.pdf
    • https://kldcardio.ru/images/minecraft-texture-packs-free-download_GM479516143.pdf
    • https://kldcardio.ru/images/counter-blox-roblox-offensive-hacks-wallhacks_GM431946152.pdf
    • https://kldcardio.ru/images/roblox-piano-hack-comment-faire_GM431946152.pdf
    • https://kldcardio.ru/images/roblox-make-a-shirt-free-shipping_GM431946152.pdf
    • https://kldcardio.ru/images/twisted-murderer-roblox-level-hack-with-nopde-engine_GM431946152.pdf
    • https://kldcardio.ru/images/get-free-robux-info_GM431946152.pdf
    • https://kldcardio.ru/images/roblox-jailbrek-fly-cheat-egine_GM431946152.pdf
    • https://kldcardio.ru/images/free-models-virus-roblox_GM431946152.pdf
    • https://kldcardio.ru/images/how-to-get-free-spins-on-coin-master_GM406889139.pdf
    • https://kldcardio.ru/images/impact-minecraft-hack_GM479516143.pdf
    • https://kldcardio.ru/images/games-on-roblox-that-give-you-free-robux_GM431946152.pdf
    • https://kldcardio.ru/images/how-to-hack-a-roblox-account-with-forgot-password_GM431946152.pdf
    • https://kldcardio.ru/images/how-to-get-free-robux-no-verification_GM431946152.pdf
    • https://kldcardio.ru/images/como-hackear-para-tener-robux-roblox_GM431946152.pdf
    • https://kldcardio.ru/images/code-cheat-roblox-pokemon-brick-bronze_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f4d.bin
a5f8ecbded3345e500711382941588e82a1e6d1b265bda52d4ef7af49e5afa36
pdf-font-stream PDF embedded font (sfnt) at offset 0x2F4D 22276 bytes
font_01_sfnt_off000060ef.bin
8bd20f45741a2c3b725c22fd27327975979a607624714c2e4363fdb2cea27adc
pdf-font-stream PDF embedded font (sfnt) at offset 0x60EF 18944 bytes