Malicious PDF — malware analysis report

Static analysis result for SHA-256 11e8998ca5acfdc6…

MALICIOUS

PDF

36.0 KB Created: 2021-07-03 10:02:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 9807a5e68efc71dad02d484f139811a2 SHA-1: 1e4568d41ef025fdd91353a72dbab40653b9fda0 SHA-256: 11e8998ca5acfdc6956695e40e34c40988a5aa5bbd3d4fac8d46c9a0ad8859bf
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, many of which are structured as SEO link farms for game cheats and hacks. The primary URL, http://netcdn.co/app/835599320/tiktok-free-download-for-windows-10-game-hack, suggests a lure for downloading software. The presence of a 'download button' heuristic further supports the malicious intent of directing users to external resources.

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/835599320/tiktok-free-download-for-windows-10-game-hack
    • https://elearning.mtsn2hsu.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-codes-2021_GM431946152.pdf
    • https://elearning.mtsn2hsu.sch.id/__statics/gudangsoal/files/how-to-make-a-modded-minecraft-server-for-free_GM479516143.pdf
    • https://elearning.mtsn2hsu.sch.id/__statics/gudangsoal/files/roblox36com-free-robux_GM431946152.pdf
    • https://elearning.mtsn2hsu.sch.id/__statics/gudangsoal/files/coin-master-hack-cheat-generator-d_GM406889139.pdf
    • https://elearning.mtsn2hsu.sch.id/__statics/gudangsoal/files/minecraft-112-2-hacked-client_GM479516143.pdf
    • https://elearning.mtsn2hsu.sch.id/__statics/gudangsoal/files/roblox-promo-codes-for-free-robux_GM431946152.pdf
    • https://elearning.mtsn2hsu.sch.id/__statics/gudangsoal/files/roblox-bloxburg-hack_GM431946152.pdf
    • https://elearning.mtsn2hsu.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-blogspot-today_GM406889139.pdf
    • https://elearning.mtsn2hsu.sch.id/__statics/gudangsoal/files/fly-cheat-in-roblox-engine-2021_GM431946152.pdf
    • https://elearning.mtsn2hsu.sch.id/__statics/gudangsoal/files/coin-master-free-spins-daily-link-game-mod_GM406889139.pdf
    • https://elearning.mtsn2hsu.sch.id/__statics/gudangsoal/files/hack-de-cuentas-de-roblox_GM431946152.pdf
    • https://elearning.mtsn2hsu.sch.id/__statics/gudangsoal/files/coin-master-village-cost_GM406889139.pdf
    • https://elearning.mtsn2hsu.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-link-today-haktuts_GM406889139.pdf
    • https://elearning.mtsn2hsu.sch.id/__statics/gudangsoal/files/is-minecraft-free-on-nintendo-switch_GM479516143.pdf
    • https://elearning.mtsn2hsu.sch.id/__statics/gudangsoal/files/coin-master-20-free-spins-link-today_GM406889139.pdf
    • https://elearning.mtsn2hsu.sch.id/__statics/gudangsoal/files/how-to-hack-a-roblox-account-2021_GM431946152.pdf
    • https://elearning.mtsn2hsu.sch.id/__statics/gudangsoal/files/how-to-download-minecraft-for-free-on-android_GM479516143.pdf
    • https://elearning.mtsn2hsu.sch.id/__statics/gudangsoal/files/tiktok-free-make-your-day_GM835599320.pdf
    • https://elearning.mtsn2hsu.sch.id/__statics/gudangsoal/files/how-to-download-minecraft-for-free-on-windows_GM479516143.pdf
    • https://elearning.mtsn2hsu.sch.id/__statics/gudangsoal/files/get-free-cards-in-coin-master_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000035d2.bin
49e779362ce6d7bcdd9930db39c4a7b1dba1a11d341c03f182f823b482ac2a9b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x35D2 22352 bytes
font_01_sfnt_off000067c7.bin
ce84e6550de31365cad9e29874c8fd9be1d9aabe75386802dec99f73610228af		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67C7 19028 bytes

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