Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a7a2b7c832e5174…

MALICIOUS

PDF

35.6 KB Created: 2021-06-18 09:11:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: fd98122c1433b4d04efae14b3a519f30 SHA-1: 640cecb5403ca3d2b774b04169e06a128ed081d1 SHA-256: 4a7a2b7c832e517442a0b3af619dba4b91835d6cfbbf87f321a3fa6da1ca6fde
102 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded links, many of which are SEO-optimized and point to pages offering hacks or free items for games like Roblox and Coin Master. The primary URL, http://netcdn.co/app/431946152/how-to-get-any-roblox-item-for-free-2021-game-hack, suggests a lure for potentially malicious downloads or scams. The ML classifier also strongly flagged this PDF as malicious.

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/how-to-get-any-roblox-item-for-free-2021-game-hack
    • https://elearning.mtsn8jombang.sch.id/__statics/gudangsoal/files/coin-master-attack-madness-hack_GM406889139.pdf
    • https://elearning.mtsn8jombang.sch.id/__statics/gudangsoal/files/free-robux-websites-no-human-verification_GM431946152.pdf
    • https://elearning.mtsn8jombang.sch.id/__statics/gudangsoal/files/coin-master-free-spin-today_GM406889139.pdf
    • https://elearning.mtsn8jombang.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-31-march-2021_GM406889139.pdf
    • https://elearning.mtsn8jombang.sch.id/__statics/gudangsoal/files/coin-master-hack-app_GM406889139.pdf
    • https://elearning.mtsn8jombang.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-today_GM406889139.pdf
    • https://elearning.mtsn8jombang.sch.id/__statics/gudangsoal/files/earn-free-robux-on-roblox_GM431946152.pdf
    • https://elearning.mtsn8jombang.sch.id/__statics/gudangsoal/files/how-to-get-free-spins-on-coin-master_GM406889139.pdf
    • https://elearning.mtsn8jombang.sch.id/__statics/gudangsoal/files/blox-land-free-robux_GM431946152.pdf
    • https://elearning.mtsn8jombang.sch.id/__statics/gudangsoal/files/minecraft-education-edition-free_GM479516143.pdf
    • https://elearning.mtsn8jombang.sch.id/__statics/gudangsoal/files/coin-master-hack-pro-gamers_GM406889139.pdf
    • https://elearning.mtsn8jombang.sch.id/__statics/gudangsoal/files/minecraft-cracked-client_GM479516143.pdf
    • https://elearning.mtsn8jombang.sch.id/__statics/gudangsoal/files/how-do-i-get-free-robux-on-roblox_GM431946152.pdf
    • https://elearning.mtsn8jombang.sch.id/__statics/gudangsoal/files/free-robux-without-human-verification-real_GM431946152.pdf
    • https://elearning.mtsn8jombang.sch.id/__statics/gudangsoal/files/lastrick-com-coin-master-hack_GM406889139.pdf
    • https://elearning.mtsn8jombang.sch.id/__statics/gudangsoal/files/is-minecraft-java-free_GM479516143.pdf
    • https://elearning.mtsn8jombang.sch.id/__statics/gudangsoal/files/how-to-buy-robux-for-free_GM431946152.pdf
    • https://elearning.mtsn8jombang.sch.id/__statics/gudangsoal/files/coin-master-apk-hack-2021-ios_GM406889139.pdf
    • https://elearning.mtsn8jombang.sch.id/__statics/gudangsoal/files/how-to-get-free-hair-on-roblox_GM431946152.pdf
    • https://elearning.mtsn8jombang.sch.id/__statics/gudangsoal/files/coin-blogspot_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000031ef.bin
d19787a099965878ff9ad5cc3d301b3d496d5d72cf64fa910b0a575a0f0c772f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x31EF 22648 bytes
font_01_sfnt_off00006478.bin
f71a46337e43be23e10343e4f3597d6483608cc0f6e1df8164802fa74e3001e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6478 19576 bytes

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