Malicious PDF — malware analysis report

Static analysis result for SHA-256 78e000f5c053c847…

MALICIOUS

PDF

35.1 KB Created: 2021-06-27 23:12:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 1e0e4b350f3eefb8e08e311f905bfcfb SHA-1: 3086e3f7e6dfc1b3d29e1c435a81daf611ca6ce6 SHA-256: 78e000f5c053c84768107f931abf63b1b6b2c771c134f5b26c9cdc1946806e06
102 Risk Score

Malware Insights

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

This PDF document contains a large number of external links, many of which are presented as download opportunities for game cheats and hacks. The ML classifier strongly indicated maliciousness, and the presence of numerous SEO-optimized PDF links suggests a link farm designed to drive traffic to potentially harmful content. The document's content and structure are consistent with a phishing or malware distribution lure.

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-hack-accounts-on-roblox-with-cheat-engine-game-hack
    • https://alisa.com.tw/upload/files/how-can-you-get-free-robux_GM431946152.pdf
    • https://alisa.com.tw/upload/files/coin-master-hack-mod-apk-free-download_GM406889139.pdf
    • https://alisa.com.tw/upload/files/roblox-cheats-android_GM431946152.pdf
    • https://alisa.com.tw/upload/files/how-to-hack-roblox-passwords_GM431946152.pdf
    • https://alisa.com.tw/upload/files/free-robux-sites-that-work_GM431946152.pdf
    • https://alisa.com.tw/upload/files/easy-free-spins-coin-master_GM406889139.pdf
    • https://alisa.com.tw/upload/files/haktuts-coin-master-free-spin-today_GM406889139.pdf
    • https://alisa.com.tw/upload/files/minecraft-java-free-download_GM479516143.pdf
    • https://alisa.com.tw/upload/files/games-like-bloxbutg-in-roblox-for-free_GM431946152.pdf
    • https://alisa.com.tw/upload/files/roblox-play-as-guest-free-no-download_GM431946152.pdf
    • https://alisa.com.tw/upload/files/youtube-greenlegocats-free-robux_GM431946152.pdf
    • https://alisa.com.tw/upload/files/wurst-115-2_GM479516143.pdf
    • https://alisa.com.tw/upload/files/how-to-add-a-second-floor-in-roblox-bloxburg-free_GM431946152.pdf
    • https://alisa.com.tw/upload/files/to-get-free-robux_GM431946152.pdf
    • https://alisa.com.tw/upload/files/coin-master-free-spins-reddit_GM406889139.pdf
    • https://alisa.com.tw/upload/files/how-to-get-hacked-accounts-back-on-roblox_GM431946152.pdf
    • https://alisa.com.tw/upload/files/free-robux-hack-pc-2021_GM431946152.pdf
    • https://alisa.com.tw/upload/files/how-to-make-a-free-minecraft-account_GM479516143.pdf
    • https://alisa.com.tw/upload/files/money-roblox-hack-pastebin_GM431946152.pdf
    • https://alisa.com.tw/upload/files/coin-master-hack-xyz-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_off000031a2.bin
5409c21163889475acf2b6dd88db5c70179980d0440a01d7c591550c0f6063ed
pdf-font-stream PDF embedded font (sfnt) at offset 0x31A2 22144 bytes
font_01_sfnt_off000062d0.bin
afba5c8b345f87f0ffd0a9d42e3be47787446f09d4ce68611a2b5b388b30186d
pdf-font-stream PDF embedded font (sfnt) at offset 0x62D0 19548 bytes