Malicious PDF — malware analysis report

Static analysis result for SHA-256 965cff13e346a09a…

MALICIOUS

PDF

34.8 KB Created: 2021-07-05 17:55:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: a917da044f105175c686ad4aaec8483f SHA-1: 095b72643973536e876be19f9a676c8be3a1a652 SHA-256: 965cff13e346a09a1c0df9816dca00b5061a801924733a74f871aaa433118583
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a large number of embedded URLs, many of which are structured as SEO-optimized links pointing to resources related to free in-game currency and hacks for popular games like Roblox and Coin Master. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external links, and 'SE_PASSWORD_ARCHIVE_LURE' suggests a common tactic to hide malicious content. The primary URL, http://netcdn.tw/app/406889139/cm-free-spin-link-today-game-hack, likely serves as the initial lure or payload delivery point.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/cm-free-spin-link-today-game-hack
    • http://library.stikessuakainsan.ac.id//repository/blogspot-free-spins-coin-master_GM406889139.pdf
    • http://library.stikessuakainsan.ac.id/repository/rbxfree-com-free-robux_GM431946152.pdf
    • http://library.stikessuakainsan.ac.id/repository/how-to-tell-if-roblox-hack-is-a-scam_GM431946152.pdf
    • http://library.stikessuakainsan.ac.id/repository/how-to-get-more-robux-on-roblox-for-free_GM431946152.pdf
    • http://library.stikessuakainsan.ac.id/repository/free-roblox-usernames-and-passwords-not-changeable_GM431946152.pdf
    • http://library.stikessuakainsan.ac.id//repository/you-promised-my-son-free-robux_GM431946152.pdf
    • http://library.stikessuakainsan.ac.id/repository/free-robux-games-on-roblox-that-work_GM431946152.pdf
    • http://library.stikessuakainsan.ac.id/repository/free-robux-site-legit_GM431946152.pdf
    • http://library.stikessuakainsan.ac.id/repository/cheat-engine-roblox-jailbreak_GM431946152.pdf
    • http://library.stikessuakainsan.ac.id/repository/roblox-tokyo-ghoul-project-killzone-hack_GM431946152.pdf
    • http://library.stikessuakainsan.ac.id/repository/dragon-ball-fury-roblox-hacked_GM431946152.pdf
    • http://library.stikessuakainsan.ac.id/repository/how-you-get-free-robux_GM431946152.pdf
    • http://library.stikessuakainsan.ac.id//repository/coin-master-100-spin_GM406889139.pdf
    • http://library.stikessuakainsan.ac.id/repository/i-want-robux-for-free_GM431946152.pdf
    • http://library.stikessuakainsan.ac.id/repository/coin-master-hack-online-generator_GM406889139.pdf
    • http://library.stikessuakainsan.ac.id/repository/bux-life-free-robux_GM431946152.pdf
    • http://library.stikessuakainsan.ac.id/repository/roblox-has-talent-piano-hack_GM431946152.pdf
    • http://library.stikessuakainsan.ac.id/repository/how-to-get-stuff-that-cost-coins-free-mcpe-master_GM406889139.pdf
    • http://library.stikessuakainsan.ac.id/repository/free-robux-hack-no-verification_GM431946152.pdf
    • http://library.stikessuakainsan.ac.id/repository/conseguir-web-robux-gratis-con-hacks_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000031c4.bin
8cb9c23b6dac1b9f9bdec2089ece4e4824e5f11857a40e83ff20749fcd2054d5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x31C4 22448 bytes
font_01_sfnt_off000063a7.bin
ab50593e8d9ec91ff316e3914c5f1e57f6a16201982a487eb389823534895425		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63A7 18852 bytes

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