Malicious PDF — malware analysis report

Static analysis result for SHA-256 f446ec6de6ca75ad…

MALICIOUS

PDF

45.7 KB Created: 2021-05-11 06:42:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 89918392f5a8981e529708d568ba6387 SHA-1: 271da4522068eaaac26d8ef2e0b5b65f96ed5996 SHA-256: f446ec6de6ca75ad5af327c7eee1e016ec774ba1b5d388bf0d4da7ab344dfe8c
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains numerous external links, many of which point to files with names suggesting cheats or hacks for popular games like Roblox and Coin Master. The presence of a "Free Robux Giveaway" lure and a "Click here to download" prompt, combined with a high ML classifier score, indicates a malicious intent to trick users into downloading further malware. The document's structure and content strongly suggest it is part of a phishing or scam campaign.

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 https://netcdn.xyz/app/431946152/free-robux-giveaway-live-game-hack
    • http://elearning.mtsn8kuningan.sch.id/__statics/gudangsoal/files/hack-coin-master-without-root_GM406889139.pdf
    • http://elearning.mtsn8kuningan.sch.id/__statics/gudangsoal/files/coin-master-free-spins-apk-2021_GM406889139.pdf
    • http://elearning.mtsn8kuningan.sch.id/__statics/gudangsoal/files/earn-robux-for-roblox_GM431946152.pdf
    • http://elearning.mtsn8kuningan.sch.id/__statics/gudangsoal/files/free-spins-on-coin-master-hack_GM406889139.pdf
    • http://elearning.mtsn8kuningan.sch.id/__statics/gudangsoal/files/free-robux-games-on-roblox_GM431946152.pdf
    • http://elearning.mtsn8kuningan.sch.id/__statics/gudangsoal/files/free-robux-safe_GM431946152.pdf
    • http://elearning.mtsn8kuningan.sch.id/__statics/gudangsoal/files/roblox-avatar-editor-free_GM431946152.pdf
    • http://elearning.mtsn8kuningan.sch.id/__statics/gudangsoal/files/pasos-para-hackear-coins-master_GM406889139.pdf
    • http://elearning.mtsn8kuningan.sch.id/__statics/gudangsoal/files/free-spins-coin-master-hack_GM406889139.pdf
    • http://elearning.mtsn8kuningan.sch.id/__statics/gudangsoal/files/how-to-get-java-minecraft-for-free_GM479516143.pdf
    • http://elearning.mtsn8kuningan.sch.id/__statics/gudangsoal/files/robuxmatchcon_GM431946152.pdf
    • http://elearning.mtsn8kuningan.sch.id/__statics/gudangsoal/files/oprewards-com-robux_GM431946152.pdf
    • http://elearning.mtsn8kuningan.sch.id/__statics/gudangsoal/files/free-roblox-premium_GM431946152.pdf
    • http://elearning.mtsn8kuningan.sch.id/__statics/gudangsoal/files/free-coin-master-spins-daily_GM406889139.pdf
    • http://elearning.mtsn8kuningan.sch.id/__statics/gudangsoal/files/how-to-hack-a-minecraft-account_GM479516143.pdf
    • http://elearning.mtsn8kuningan.sch.id/__statics/gudangsoal/files/coin-master-hack-spins-game-download_GM406889139.pdf
    • http://elearning.mtsn8kuningan.sch.id/__statics/gudangsoal/files/how-to-get-free-admin-in-roblox_GM431946152.pdf
    • http://elearning.mtsn8kuningan.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-easy-hack_GM431946152.pdf
    • http://elearning.mtsn8kuningan.sch.id/__statics/gudangsoal/files/coin-master-pet-food-hack_GM406889139.pdf
    • http://elearning.mtsn8kuningan.sch.id/__statics/gudangsoal/files/coin-master-free-spins-and-coins-2021_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004dd2.bin
f93c90ffcc9147bc5bf8b379cb7e6e5b7729668c6262593de5bcba8d8acbfcc1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4DD2 27256 bytes
font_01_sfnt_off00008ed2.bin
3db94d24ba3abe2bdb9d310b65f8480e65e9005ffe127367b6d2ef8ae08c9d7b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8ED2 18820 bytes

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